Update README.md

README.md

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 ### Data Set Information:
 The Covid patient datasets dataset is collected by randomly sampling
 
-- age
-- Sleep_problems
-- Headache
-- Diarrhea
-- Abdominal_pain
-- body_pain
-- Body_discoloration
-- Cough
-- Fever
-- Ague
-- Sore_throat
-- Fatigue
-- runny_nose
-- Chest_pain
-- Decreased_appetite
-- Vomit
-- Nausea
-- Sneezing
-- Shortness_of_breath
-- Loss_of_smell
-- Loss_of_taste
-- urticaria
+- age -> numerical * (missing value)
+- Sleep_problems -> yes, no
+- Headache -> yes, no
+- Diarrhea -> yes, no
+- Abdominal_pain -> yes, no
+- body_pain -> yes, no
+- Body_discoloration -> yes, no
+- Cough -> yes, no
+- Fever -> yes, no
+- Ague -> yes, no
+- Sore_throat -> yes, no
+- Fatigue -> yes, no
+- runny_nose -> yes, no
+- Chest_pain -> yes, no
+- Decreased_appetite -> yes, no
+- Vomit -> yes, no
+- Nausea -> yes, no
+- Sneezing -> yes, no
+- Shortness_of_breath -> yes, no
+- Loss_of_smell -> yes, no
+- Loss_of_taste -> yes, no
+- urticaria -> yes, no
 
 values from covid patient symptoms of various age groups, race groups, and genders obtained from semnan University. Total sample size is 417.