R Markdown

Question 1

What is the extension for an R Markdown document?

Answer 1

.Rmd

Question 2

What button do you click to render an R Markdown document?

Answer 2

the “Knit” button

Question 3

Insert [TEXT] in the output section of an R Markdown file to generate a powerpoint presentation.

Answer 3

“powerpoint_presentation”

Question 4

To generate a PDF from an R Markdown, [blank] must be installed on your system.

Answer 4

LaTeX. This can be installed via the “tinytex” package.

Question 5

What is the output format to knit a prettydoc document?

Answer 5

output: prettydoc::html_pretty

Question 6

What is the keyboard shortcut to create a chunk of code in an R Markdown file?

Answer 6

Command + Option + i (MAC)

Question 7

The [BLANK] option in an R Markdown chunk shows or hides the R code chunk in the knitted document.

Answer 7

echo

Question 8

The filter function affects [BLANK] in a dataset while the select function affects [BLANKS].

Answer 8

Filter affects ROWS; Select affects COLUMNS

Question 9

How would you match NA values for a variable called “ages” and set its NA values to “Missing age”?

Answer 9

is.na(ages) ~ “Missing age”

Question 10

Which function converts numeric values to integers?

Answer 10

as.integer()