Update visualize.Rmd (#185)

Exercises Typo
2016-07-24 16:02:44 +02:00
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@@ -404,7 +404,7 @@ ggplot(data = mpg, mapping = aes(x = displ, y = hwy)) +

 (Remember, `dplyr::filter()` calls the `filter()` function from the dplyr package. You'll learn how `filter()` works in the next chapter.)

-### Exericses
+### Exercises

 1.  What geom would you use to draw a line chart? A boxplot? 
    A histogram? An area chart?