Fix small problems

This commit is contained in:
Hadley Wickham 2022-11-11 09:41:59 -06:00
parent 1476c94ea2
commit 64a5123400
2 changed files with 1 additions and 3 deletions

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@ -156,7 +156,7 @@ This error arises because you're calling the function with no input, e.g.:
median()
```
### Calling multiple funcitons
### Calling multiple functions
In more complex cases, you might want to supply additional arguments or perform multiple transformations.
Lets motivate this problem with a simple example: what happens if we have some missing values in our data?

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@ -79,8 +79,6 @@ x <- c(1, 4, 5, 7, -99)
na_if(x, -99)
```
In @sec-across-missing-values, you'll learn how to easily apply these tools to (e.g.) every numeric column in a data frame.
### NaN
Before we continue, there's one special type of missing value that you'll encounter from time to time: a `NaN` (pronounced "nan"), or **n**ot **a** **n**umber.