Update dhfr-handling-missing-data.R

Author: dataprofessor

dhfr/dhfr-handling-missing-data.R

@@ -31,10 +31,13 @@ na.gen <- function(data,n) {
 }
 
 
-# Choose 1 of the following to run (they'll produce the same result)
+# Before introducing NA to the dataset, leave the Y class label (output variable) out
 
 dhfr <- dhfr[,-1]
 
+
+# Choose 1 of the following to run (they'll produce the same result)
+
 dhfr <- na.gen(dhfr,100)
 
 dhfr <- na.gen(n=100,data=dhfr)