Fix a typo: Should be purrr instead of purr

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jjchern
2016-06-17 23:51:44 -05:00
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parent 17ef519058
commit 70a204c8ab

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@@ -155,7 +155,7 @@ summary(h)
### Exercises ### Exercises
1. What variables in `heights` do you expect to be most highly correlated with 1. What variables in `heights` do you expect to be most highly correlated with
income? Use `cor()` plus `purr::map_dbl()` to check your guesses. income? Use `cor()` plus `purrr::map_dbl()` to check your guesses.
1. Correlation only summarises the linear relationship between two continuous 1. Correlation only summarises the linear relationship between two continuous
variables. There are some famous drawbacks to the correlation. What variables. There are some famous drawbacks to the correlation. What