Update exercise 2 section 3.2.4 (#511)

Did you mean `mpg` instead of `mtcars`?
This commit is contained in:
RomeroBarata
2017-05-03 09:58:35 -03:00
committed by Hadley Wickham
parent a4e266084f
commit 99271ee711

View File

@@ -84,7 +84,7 @@ The rest of this chapter will show you how to complete and extend this template
1. Run `ggplot(data = mpg)` what do you see?
1. How many rows are in `mtcars`? How many columns?
1. How many rows are in `mpg`? How many columns?
1. What does the `drv` variable describe? Read the help for `?mpg` to find
out.