Question

Point out the correct statement?

(a) You can also omit variables using the select() function by using the negative sign

(b) The arrange() function also allows a special syntax that allows you to specify variable names based on patterns

(c) Reordering rows of a data frame is normally easier to do in R

(d) The dplyr package provides any “new” functionality to R

This question was posed to me in an online quiz.

Asked question is from dplyr in portion R – Data Storage, Formats, Objects and Operations of R Programming

Answer 1

The correct choice is (a) You can also omit variables using the select() function by using the negative sign

To explain I would say: The arrange() function is used to reorder rows of a data frame according to one of the variables/columns.