diff --git a/Do/abortion_ddd.do b/Do/abortion_ddd.do
index dbb0ec2..ac74a54 100644
--- a/Do/abortion_ddd.do
+++ b/Do/abortion_ddd.do
@@ -1,6 +1,6 @@
 use https://github.com/scunning1975/mixtape/raw/master/abortion.dta, clear
 
-* DDD estimate for 15-19 year olds vs. 20-24 year olds in repeal vs Roe states
+* DDD estimate for 15-19 year olds vs. 25-29 year olds in repeal vs Roe states
 gen yr=(repeal) & (younger==1)
 gen wm=(wht==1) & (male==1)
 gen wf=(wht==1) & (male==0)
diff --git a/Do/collider_discrimination.do b/Do/collider_discrimination.do
index ec8eafa..606b3ee 100644
--- a/Do/collider_discrimination.do
+++ b/Do/collider_discrimination.do
@@ -15,8 +15,8 @@ generate occupation = (1) + (2)*ability + (0)*female + (-2)*discrimination + rno
 generate wage = (1) + (-1)*discrimination + (1)*occupation + 2*ability + rnormal() 
 
 * Regressions
-regress wage female 
-regress wage female occupation 
-regress wage female occupation ability
+regress wage discrimination 
+regress wage discrimination occupation 
+regress wage discrimination occupation ability
 
 
diff --git a/Do/synth_6.do b/Do/synth_6.do
index 0b2cf94..4405fb2 100644
--- a/Do/synth_6.do
+++ b/Do/synth_6.do
@@ -4,7 +4,7 @@
 		matlist state`i', names(rows)
 									}
 #delimit ;
-matstate=state1/state2/state4/state5/state6/state8/state9/state10/state11/state12/state13/state15/state16/state17/state18/state20/state21/state22/state23/state24/state25/state26/state27/state28/state29/state30/state31/state32/state33/state34/state35/state36/state37/state38/state39/state40/state41/state42/state45/state46/state47/state48/state49/state51/state53/state55; 
+mat state=state1/state2/state4/state5/state6/state8/state9/state10/state11/state12/state13/state15/state16/state17/state18/state20/state21/state22/state23/state24/state25/state26/state27/state28/state29/state30/state31/state32/state33/state34/state35/state36/state37/state38/state39/state40/state41/state42/state45/state46/state47/state48/state49/state51/state53/state55; 
 #delimit cr
 * ssc install mat2txt
 	mat2txt, matrix(state) saving(../inference/rmspe_bmprate.txt) replace
diff --git a/Do/thornton_ri.do b/Do/thornton_ri.do
index d837917..0c44bf3 100644
--- a/Do/thornton_ri.do
+++ b/Do/thornton_ri.do
@@ -58,6 +58,6 @@ save "`final'", replace
 gsort -ate
 gen rank = _n
 su rank if iteration==1
-gen pvalue = (`r(mean)'/1000)
+gen pvalue = rank/1000
 list if iteration==1
 
diff --git a/Giffen.dta b/Giffen.dta
new file mode 100644
index 0000000..e4d91bd
Binary files /dev/null and b/Giffen.dta differ
diff --git a/R/abortion_dd.R b/R/abortion_dd.R
index afb4f47..b192d52 100644
--- a/R/abortion_dd.R
+++ b/R/abortion_dd.R
@@ -5,7 +5,7 @@ library(estimatr)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/abortion_dd2.R b/R/abortion_dd2.R
index ecd6e3b..25e6395 100644
--- a/R/abortion_dd2.R
+++ b/R/abortion_dd2.R
@@ -4,7 +4,7 @@ library(estimatr)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
@@ -21,4 +21,4 @@ abortion <- read_data("abortion.dta") %>%
 reg <- abortion %>% 
   filter(race == 2 & sex == 2 & age == 20) %>% 
   lm_robust(lnr ~ repeal*year + fip + acc + ir + pi + alcohol+ crack + poverty+ income+ ur,
-            data = ., weights = totpop, clusters = fip)
\ No newline at end of file
+            data = ., weights = totpop, clusters = fip)
diff --git a/R/abortion_ddd.R b/R/abortion_ddd.R
index 64f76a6..b48a0eb 100644
--- a/R/abortion_ddd.R
+++ b/R/abortion_ddd.R
@@ -4,7 +4,7 @@ library(estimatr)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
@@ -40,4 +40,4 @@ abortion_plot %>%
   geom_text(aes(label = year), hjust=-0.002, vjust = -0.03)+
   geom_hline(yintercept = 0) +
   geom_errorbar(aes(ymin = mean-sd*1.96, ymax = mean+sd*1.96), width = 0.2,
-                position = position_dodge(0.05))
\ No newline at end of file
+                position = position_dodge(0.05))
diff --git a/R/abortion_ddd2.R b/R/abortion_ddd2.R
index 1575ce3..d728694 100644
--- a/R/abortion_ddd2.R
+++ b/R/abortion_ddd2.R
@@ -4,7 +4,7 @@ library(estimatr)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
@@ -27,4 +27,4 @@ abortion <- read_data("abortion.dta") %>%
 regddd <- abortion %>% 
   filter(bf == 1 & (age == 20 | age ==25)) %>% 
   lm_robust(lnr ~ repeal*year + acc + ir + pi + alcohol + crack + poverty + income + ur,
-            data = ., weights = totpop, clusters = fip)
\ No newline at end of file
+            data = ., weights = totpop, clusters = fip)
diff --git a/R/bail.R b/R/bail.R
index dc9f7a0..2aed15f 100644
--- a/R/bail.R
+++ b/R/bail.R
@@ -6,7 +6,7 @@ library(SteinIV)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/card.R b/R/card.R
index 8194b3b..2ff6c79 100644
--- a/R/card.R
+++ b/R/card.R
@@ -4,7 +4,7 @@ library(tidyverse)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/castle_1.R b/R/castle_1.R
index 0001215..c626d25 100644
--- a/R/castle_1.R
+++ b/R/castle_1.R
@@ -5,7 +5,7 @@ library(lfe)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/lmb_1.R b/R/lmb_1.R
index b44f09b..b3d8a66 100644
--- a/R/lmb_1.R
+++ b/R/lmb_1.R
@@ -4,7 +4,7 @@ library(estimatr)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
@@ -21,4 +21,4 @@ lm_3 <- lm_robust(democrat ~ lagdemocrat, data = lmb_subset, clusters = id)
 
 summary(lm_1)
 summary(lm_2)
-summary(lm_3)
\ No newline at end of file
+summary(lm_3)
diff --git a/R/nsw_experimental.R b/R/nsw_experimental.R
index 66d454d..fcb4353 100644
--- a/R/nsw_experimental.R
+++ b/R/nsw_experimental.R
@@ -3,7 +3,7 @@ library(haven)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
@@ -37,4 +37,4 @@ ate <- unique(nsw_dw$y1 - nsw_dw$y0)
 
 nsw_dw <- nsw_dw %>% 
   filter(treat == 1) %>% 
-  select(-y1, -y0)
\ No newline at end of file
+  select(-y1, -y0)
diff --git a/R/nsw_pscore.R b/R/nsw_pscore.R
index 82a1282..67c0928 100644
--- a/R/nsw_pscore.R
+++ b/R/nsw_pscore.R
@@ -3,7 +3,7 @@ library(haven)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/ols4.R b/R/ols4.R
index a065131..aab251c 100644
--- a/R/ols4.R
+++ b/R/ols4.R
@@ -3,7 +3,7 @@ library(haven)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/read_data.R b/R/read_data.R
index 6c6e7f6..96fe36c 100644
--- a/R/read_data.R
+++ b/R/read_data.R
@@ -2,8 +2,8 @@ library(haven)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
-}
\ No newline at end of file
+}
diff --git a/R/reganat.R b/R/reganat.R
index 214303c..215c08c 100644
--- a/R/reganat.R
+++ b/R/reganat.R
@@ -2,7 +2,7 @@ library(tidyverse)
 library(haven)
 
 read_data <- function(df) {
-  full_path <- paste0("https://raw.github.com/scunning1975/mixtape/master/",
+  full_path <- paste0("https://github.com/scunning1975/mixtape/raw/master/",
                       df)
   haven::read_dta(full_path)
 }
diff --git a/R/ri.R b/R/ri.R
index 2bf0cb8..48416b6 100644
--- a/R/ri.R
+++ b/R/ri.R
@@ -4,7 +4,7 @@ library(haven)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/sasp.R b/R/sasp.R
index 712c8d7..e73d191 100644
--- a/R/sasp.R
+++ b/R/sasp.R
@@ -5,7 +5,7 @@ library(plm)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/synth_1.R b/R/synth_1.R
index 73ae592..718e372 100644
--- a/R/synth_1.R
+++ b/R/synth_1.R
@@ -2,12 +2,11 @@ library(tidyverse)
 library(haven)
 library(Synth)
 library(devtools)
-if(!require(SCtools)) devtools::install_github("bcastanho/SCtools")
 library(SCtools)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/teffects_ipw.R b/R/teffects_ipw.R
index 9395494..9676225 100644
--- a/R/teffects_ipw.R
+++ b/R/teffects_ipw.R
@@ -4,7 +4,7 @@ library(ipw)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
@@ -26,4 +26,4 @@ ipw <- ipwpoint(exposure = treat,
          data = nsw_dw_cpscontrol)
 
 
-#NOT WORKING# #DO NOT USE IT#
\ No newline at end of file
+#NOT WORKING# #DO NOT USE IT#
diff --git a/R/thornton_ri.R b/R/thornton_ri.R
index fc7faf9..600f526 100644
--- a/R/thornton_ri.R
+++ b/R/thornton_ri.R
@@ -3,7 +3,7 @@ library(haven)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/titanic.R b/R/titanic.R
index 62f97c9..fe13c80 100644
--- a/R/titanic.R
+++ b/R/titanic.R
@@ -3,7 +3,7 @@ library(haven)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
@@ -22,4 +22,4 @@ ey0 <- titanic %>%
   pull(survived) %>% 
   mean()
 
-sdo <- ey1 - ey0
\ No newline at end of file
+sdo <- ey1 - ey0
diff --git a/R/training_bias_reduction.R b/R/training_bias_reduction.R
index 62ba9a8..e1cbf9a 100644
--- a/R/training_bias_reduction.R
+++ b/R/training_bias_reduction.R
@@ -3,7 +3,7 @@ library(haven)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/training_example.R b/R/training_example.R
index 0d389e4..c914cb4 100644
--- a/R/training_example.R
+++ b/R/training_example.R
@@ -3,7 +3,7 @@ library(haven)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/R/yule.R b/R/yule.R
index e55ade2..2e8a378 100644
--- a/R/yule.R
+++ b/R/yule.R
@@ -3,7 +3,7 @@ library(haven)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/Texas/R/synth_1.R b/Texas/R/synth_1.R
index 73ae592..f9d127d 100644
--- a/Texas/R/synth_1.R
+++ b/Texas/R/synth_1.R
@@ -7,7 +7,7 @@ library(SCtools)
 
 read_data <- function(df)
 {
-  full_path <- paste("https://raw.github.com/scunning1975/mixtape/master/", 
+  full_path <- paste("https://github.com/scunning1975/mixtape/raw/master/", 
                      df, sep = "")
   df <- read_dta(full_path)
   return(df)
diff --git a/Untitled.dta b/Untitled.dta
new file mode 100644
index 0000000..c2f9e11
Binary files /dev/null and b/Untitled.dta differ
diff --git a/observables.dta b/observables.dta
new file mode 100644
index 0000000..199499e
Binary files /dev/null and b/observables.dta differ
diff --git a/python/abortion_dd.py b/python/abortion_dd.py
index a52bc58..16c8f1d 100644
--- a/python/abortion_dd.py
+++ b/python/abortion_dd.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/abortion_dd2.py b/python/abortion_dd2.py
index 1ce1c4e..5c94280 100644
--- a/python/abortion_dd2.py
+++ b/python/abortion_dd2.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
@@ -28,4 +28,4 @@ def read_data(file):
         method='pinv')
 )
 
-regdd.summary()
\ No newline at end of file
+regdd.summary()
diff --git a/python/abortion_ddd.py b/python/abortion_ddd.py
index 3bce75c..bee7cf5 100644
--- a/python/abortion_ddd.py
+++ b/python/abortion_ddd.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/abortion_ddd2.py b/python/abortion_ddd2.py
index e716d29..bdf5b2b 100644
--- a/python/abortion_ddd2.py
+++ b/python/abortion_ddd2.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 abortion = read_data('abortion.dta')
 abortion = abortion[~pd.isnull(abortion.lnr)]
diff --git a/python/bail.py b/python/bail.py
index 5c3d3e2..65c8ea1 100644
--- a/python/bail.py
+++ b/python/bail.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 judge = read_data("judge_fe.dta")
diff --git a/python/card.py b/python/card.py
index 3e1eee2..b3f193a 100644
--- a/python/card.py
+++ b/python/card.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 card = read_data("card.dta")
 
diff --git a/python/castle_1.py b/python/castle_1.py
index cec7b5f..54315d8 100644
--- a/python/castle_1.py
+++ b/python/castle_1.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 castle = read_data('castle.dta')
diff --git a/python/castle_2.py b/python/castle_2.py
index 86065fc..4b5004d 100644
--- a/python/castle_2.py
+++ b/python/castle_2.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 castle['time_til'] = castle['year'] - castle['treatment_date']
diff --git a/python/castle_3.py b/python/castle_3.py
index fb2cbcf..562a669 100644
--- a/python/castle_3.py
+++ b/python/castle_3.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/castle_5.py b/python/castle_5.py
index fce3972..4cbb281 100644
--- a/python/castle_5.py
+++ b/python/castle_5.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/cluster1.py b/python/cluster1.py
index e98d313..53accee 100644
--- a/python/cluster1.py
+++ b/python/cluster1.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/cluster2.py b/python/cluster2.py
index cea0549..97c8195 100644
--- a/python/cluster2.py
+++ b/python/cluster2.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 def gen_cluster(param = (.1, .5), n = 1000, n_cluster = 50, rho = .5):
diff --git a/python/cluster3.py b/python/cluster3.py
index 05652eb..6e344e9 100644
--- a/python/cluster3.py
+++ b/python/cluster3.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 def gen_cluster(param = (.1, .5), n = 1000, n_cluster = 50, rho = .5):
diff --git a/python/cluster4.py b/python/cluster4.py
index 6d1a092..3351a5f 100644
--- a/python/cluster4.py
+++ b/python/cluster4.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/collider_discrimination.py b/python/collider_discrimination.py
index 3814e03..8b1ec65 100644
--- a/python/collider_discrimination.py
+++ b/python/collider_discrimination.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/independence.py b/python/independence.py
index 9b5a44e..f234175 100644
--- a/python/independence.py
+++ b/python/independence.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/ipw.py b/python/ipw.py
index 7309359..b7efce5 100644
--- a/python/ipw.py
+++ b/python/ipw.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/ks.py b/python/ks.py
index 3b8671c..651ff46 100644
--- a/python/ks.py
+++ b/python/ks.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/lm_3.py b/python/lm_3.py
index fce3972..4cbb281 100644
--- a/python/lm_3.py
+++ b/python/lm_3.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/lmb_1.py b/python/lmb_1.py
index c5ee56f..4686c51 100644
--- a/python/lmb_1.py
+++ b/python/lmb_1.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 def lm_robust(formula, data):
     regression = sm.OLS.from_formula(formula, data = data)
diff --git a/python/lmb_2.py b/python/lmb_2.py
index 0333c8e..d4bfd97 100644
--- a/python/lmb_2.py
+++ b/python/lmb_2.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 def lm_robust(formula, data):
     regression = sm.OLS.from_formula(formula, data = data)
diff --git a/python/lmb_3.py b/python/lmb_3.py
index 608977d..e707e64 100644
--- a/python/lmb_3.py
+++ b/python/lmb_3.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 def lm_robust(formula, data):
     regression = sm.OLS.from_formula(formula, data = data)
diff --git a/python/lmb_4.py b/python/lmb_4.py
index 9aab049..9cc6bba 100644
--- a/python/lmb_4.py
+++ b/python/lmb_4.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 def lm_robust(formula, data):
     regression = sm.OLS.from_formula(formula, data = data)
diff --git a/python/lmb_5.py b/python/lmb_5.py
index cd01bcb..a312e05 100644
--- a/python/lmb_5.py
+++ b/python/lmb_5.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 def lm_robust(formula, data):
     regression = sm.OLS.from_formula(formula, data = data)
diff --git a/python/lmb_6.py b/python/lmb_6.py
index 4fef52f..1878dab 100644
--- a/python/lmb_6.py
+++ b/python/lmb_6.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 def lm_robust(formula, data):
     regression = sm.OLS.from_formula(formula, data = data)
diff --git a/python/lmb_7.py b/python/lmb_7.py
index e3140a5..66b181c 100644
--- a/python/lmb_7.py
+++ b/python/lmb_7.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 def lm_robust(formula, data):
     regression = sm.OLS.from_formula(formula, data = data)
diff --git a/python/moviestar.py b/python/moviestar.py
index 5b5cfda..5eeb789 100644
--- a/python/moviestar.py
+++ b/python/moviestar.py
@@ -10,7 +10,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/nsw_experimental.py b/python/nsw_experimental.py
index fc04c53..1d110eb 100644
--- a/python/nsw_experimental.py
+++ b/python/nsw_experimental.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 nsw_dw = read_data('nsw_mixtape.dta')
diff --git a/python/nsw_pscore.py b/python/nsw_pscore.py
index 4243c4c..6ee089c 100644
--- a/python/nsw_pscore.py
+++ b/python/nsw_pscore.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 # Prepare data for logit 
diff --git a/python/ols.py b/python/ols.py
index d16c8e6..fe79170 100644
--- a/python/ols.py
+++ b/python/ols.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 np.random.seed(1)
 
diff --git a/python/ols2.py b/python/ols2.py
index 9ba6d00..6d0777f 100644
--- a/python/ols2.py
+++ b/python/ols2.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 tb = pd.DataFrame({
diff --git a/python/ols3.py b/python/ols3.py
index 0a06157..009aad8 100644
--- a/python/ols3.py
+++ b/python/ols3.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 coefs = np.zeros(1000)
 for i in range(1000):
diff --git a/python/ols4.py b/python/ols4.py
index fce3972..4cbb281 100644
--- a/python/ols4.py
+++ b/python/ols4.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/rdd_simulate1.py b/python/rdd_simulate1.py
index dc2f0e2..5910e60 100644
--- a/python/rdd_simulate1.py
+++ b/python/rdd_simulate1.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 np.random.seed(12282020)
 
diff --git a/python/rdd_simulate2.py b/python/rdd_simulate2.py
index 80527a7..0aae7ae 100644
--- a/python/rdd_simulate2.py
+++ b/python/rdd_simulate2.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 np.random.seed(12282020)
diff --git a/python/rdd_simulate3.py b/python/rdd_simulate3.py
index a136c7d..7180307 100644
--- a/python/rdd_simulate3.py
+++ b/python/rdd_simulate3.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 np.random.seed(12282020)
 
diff --git a/python/rdd_simulate4.py b/python/rdd_simulate4.py
index 794d843..c652069 100644
--- a/python/rdd_simulate4.py
+++ b/python/rdd_simulate4.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 np.random.seed(12282020)
 
diff --git a/python/read_data.py b/python/read_data.py
index fce3972..4cbb281 100644
--- a/python/read_data.py
+++ b/python/read_data.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/reganat.py b/python/reganat.py
index 9fa6faf..9ea4b9d 100644
--- a/python/reganat.py
+++ b/python/reganat.py
@@ -9,10 +9,10 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
-auto = pd.read_stata('https://raw.github.com/scunning1975/mixtape/master/auto.dta')
+auto = pd.read_stata('https://github.com/scunning1975/mixtape/raw/master/auto.dta')
 auto['length'] = auto['length'] - auto['length'].mean()
 
 lm1 = sm.OLS.from_formula('price ~ length', data=auto).fit()
diff --git a/python/ri.py b/python/ri.py
index a6e5f47..318d092 100644
--- a/python/ri.py
+++ b/python/ri.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/sasp.py b/python/sasp.py
index bc2bca9..8e47a08 100644
--- a/python/sasp.py
+++ b/python/sasp.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/synth_1.py b/python/synth_1.py
index fa4605e..bbc9ef9 100644
--- a/python/synth_1.py
+++ b/python/synth_1.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/synth_2.py b/python/synth_2.py
index 5c6d4f0..32f0b5c 100644
--- a/python/synth_2.py
+++ b/python/synth_2.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/tea.py b/python/tea.py
index fd88fbd..b333ec2 100644
--- a/python/tea.py
+++ b/python/tea.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 correct = pd.DataFrame({'cup': np.arange(1,9), 
diff --git a/python/teffects_ipw.py b/python/teffects_ipw.py
index fce3972..4cbb281 100644
--- a/python/teffects_ipw.py
+++ b/python/teffects_ipw.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/thornton_ri.py b/python/thornton_ri.py
index 21b751d..5208d62 100644
--- a/python/thornton_ri.py
+++ b/python/thornton_ri.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 hiv = read_data("thornton_hiv.dta")
diff --git a/python/titanic.py b/python/titanic.py
index 175837e..1140b78 100644
--- a/python/titanic.py
+++ b/python/titanic.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/titanic_subclassification.py b/python/titanic_subclassification.py
index b0af933..62ef64b 100644
--- a/python/titanic_subclassification.py
+++ b/python/titanic_subclassification.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
@@ -44,4 +44,4 @@ def weighted_avg_effect(df):
 
 wate = titanic.groupby('s').apply(weighted_avg_effect).sum()
 
-print("The weigthted average treatment effect estimate is {:.2%}".format(wate))
\ No newline at end of file
+print("The weigthted average treatment effect estimate is {:.2%}".format(wate))
diff --git a/python/training_bias_reduction.py b/python/training_bias_reduction.py
index f29752b..f622bd8 100644
--- a/python/training_bias_reduction.py
+++ b/python/training_bias_reduction.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 training_bias_reduction = read_data("training_bias_reduction.dta") 
diff --git a/python/training_example.py b/python/training_example.py
index e87e513..592d0c7 100644
--- a/python/training_example.py
+++ b/python/training_example.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/python/yule.py b/python/yule.py
index 09c4d81..f3d2b03 100644
--- a/python/yule.py
+++ b/python/yule.py
@@ -9,7 +9,7 @@
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context
 def read_data(file): 
-	return pd.read_stata("https://raw.github.com/scunning1975/mixtape/master/" + file)
+	return pd.read_stata("https://github.com/scunning1975/mixtape/raw/master/" + file)
 
 
 
diff --git a/texas.dta b/texas.dta
index f45a3c7..51351f2 100644
Binary files a/texas.dta and b/texas.dta differ
diff --git a/training.dta b/training.dta
new file mode 100644
index 0000000..10f68fb
Binary files /dev/null and b/training.dta differ
diff --git a/training_approximate.dta b/training_approximate.dta
new file mode 100644
index 0000000..f60db80
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diff --git a/training_approximate.xlsx b/training_approximate.xlsx
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diff --git a/training_biasadj.do b/training_biasadj.do
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+* Matching with and without bias adjustment
+capture log close
+clear
+use https://github.com/scunning1975/mixtape/raw/master/training_biasadj.dta, clear
+
+* Recall the ATT was estimated to be $1607.50
+su earnings if treat==1
+local y1 = `r(mean)'
+gen y1=`y1'
+su y1
+
+su earnings if treat==0
+local y2 = `r(mean)'
+gen y2=`y2'
+su y2
+
+gen att = y1-y2
+su att // ATT $1607.50
+
+* Estimate earnings using OLS on age and gpa but only control group
+reg earnings gpa if treat==0 ,nocons
+predict mu
+
+reshape wide age gpa earning unit mu, i(matched) j(treat)
+
+gen diff = (earnings1 - earnings0)
+su diff // $1607.50
+
+gen diff_biasadj = (earnings1 - earnings0) - (mu1 - mu0)
+su diff_biasadj
+
diff --git a/training_biasadj.dta b/training_biasadj.dta
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diff --git a/training_exact.dta b/training_exact.dta
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