Merge pull request #10 from hshimon/patch-2

added language clarity to INDEL challenge

Author: sstevens2

episodes/05-dplyr.Rmd

@@ -550,7 +550,8 @@ variants %>%
 
 ## Challenge
 
-- How many mutations are INDELs?
+- Count how many mutations are INDELS vs substitutions (aka not indels). 
+- Hint: INDELS is TRUE/FALSE column in the data.
 
 :::::::::::::::  solution