Fix EDA typos, closes hadley#1272

EDA.qmd

@@ -265,7 +265,7 @@ You'll need to figure out what caused them (e.g. a data entry error) and disclos
     What happens if you leave `binwidth` unset?
     What happens if you try and zoom so only half a bar shows?
 
-## Unusual values {#sec-missing-values-eda}
+## Unusual values {#sec-unusual-values-eda}
 
 If you've encountered unusual values in your dataset, and simply want to move on to the rest of your analysis, you have two options.
 
@@ -332,7 +332,7 @@ You can do this by making a new variable with `is.na()`.
 #|   A frequency polygon of scheduled departure times of flights. Two lines 
 #|   represent flights that are cancelled and not cancelled. The x-axis ranges 
 #|   from 0 to 25 minutes and the y-axis ranges from 0 to 10000. The number of 
-#|   flights not cancelled are much higher than those not cancelled.
+#|   flights not cancelled are much higher than those cancelled.
 
 nycflights13::flights |> 
   mutate(