How to do median splits within factor levels in R?

Question

Here I make a new column to indicate whether myData is above or below its median

### MedianSplits based on Whole Data
#create some test data
myDataFrame=data.fra         


        

Answer 1

You weren't looking for something like this, were you?

Course$grade2 <- ifelse(Course$grade >= median(Course$grade), 1, 0)