From 47be104dc3f5352b456a9f8ffc45a588bc21c5e8 Mon Sep 17 00:00:00 2001 From: Dmitriy <36137274+YHx07@users.noreply.github.com> Date: Sun, 10 Apr 2022 03:35:46 +0300 Subject: [PATCH] Update lesson.yaml --- .../Manipulating_Data_with_dplyr/lesson.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Getting_and_Cleaning_Data/Manipulating_Data_with_dplyr/lesson.yaml b/Getting_and_Cleaning_Data/Manipulating_Data_with_dplyr/lesson.yaml index 661c41cd..2517ca15 100644 --- a/Getting_and_Cleaning_Data/Manipulating_Data_with_dplyr/lesson.yaml +++ b/Getting_and_Cleaning_Data/Manipulating_Data_with_dplyr/lesson.yaml @@ -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: Expression !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().'