Data Manipulation With Dplyr - Study Mode
[#71] How many functions exist for tidying the data?
Correct Answer
(C) three
[#72] . . . . . . . . uses regex groups instead of a splitting pattern or position.
Correct Answer
(C) separate()
[#73] . . . . . . . . generate aesthetic mappings that describe how variables in the data.
Correct Answer
(C) aes
[#74] If I want to save a plot to a PDF file, which of the following is a correct way of doing that?
Correct Answer
(A) Construct the plot on the screen device and then copy it to a PDF file with dev.copy2pdf()
[#75] Which of the following is an example of a vector graphics device in R?
Correct Answer
(D) SVG