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Fix yaml scanner error #508

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Fix yaml scanner error #508

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2 changes: 1 addition & 1 deletion Getting_and_Cleaning_Data/Manipulating_Data_with_dplyr/lesson.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -202,7 +202,7 @@
Output: 'Now, put an exclamation point (!) before is.na() to change all of the TRUEs to FALSEs and all of the FALSEs to TRUEs, thus telling us what is NOT NA: !is.na(c(3, 5, NA, 10)).'
CorrectAnswer: "!is.na(c(3, 5, NA, 10))"
AnswerTests: omnitest('!is.na(c(3, 5, NA, 10))')
Hint: !is.na(c(3, 5, NA, 10)) will negate the previous command, thus telling us what is NOT NA.
Hint: '!is.na(c(3, 5, NA, 10)) will negate the previous command, thus telling us what is NOT NA.'

- Class: cmd_question
Output: 'Okay, ready to put all of this together? Use filter() to return all rows of cran for which r_version is NOT NA. Hint: You will need to use !is.na() as part of your second argument to filter().'
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