diff --git a/tidy.Rmd b/tidy.Rmd
index be4c3e5..b4ae17e 100644
--- a/tidy.Rmd
+++ b/tidy.Rmd
@@ -440,7 +440,7 @@ The best place to start is almost always to gathering together the columns that
 
 * We don't know what all the other columns are yet, but given the structure 
   in the variable names (e.g. `new_sp_m014`, `new_ep_m014`, `new_ep_f014`) 
-  these are likely to be values, not variable.
+  these are likely to be values, not variables.
 
 So we need to gather together all the columns from `new_sp_m3544` to `newrel_f65`. We don't know what those values represent yet, so we'll give them the generic name `"key"`. We know the cells repesent the count of cases, so we'll use the variable `cases`. There are a lot of missing values in the current representation, so for now we'll use `na.rm` just so we can focus on the values that are present.