Question

__________ is used when you have variables that form rows instead of columns.

(a) tidy()

(b) spread()

(c) separate()

(d) gather()

I got this question at a job interview.

My doubt stems from Data Wrangling in section Profiling, Simulation and Data Analysis of R Programming

Answer 1

Right option is (b) spread()

Best explanation: You need spread() less frequently than gather() or separate().