Explanation:Other names for gather include melt (reshape2), pivot (spreadsheets) and fold (databases). 6. Which of the following function takes multiple columns ?
A. spread()
B. gather()
C. separate()
D. All of the mentioned
Answer:A
Explanation:Other names for gather include melt (reshape2), pivot (spreadsheets) and fold (databases). 6. Which of the following function takes multiple columns ?
A. spread() B. gather() C. separate() D. All of the mentioned
Explanation:gather() gathers column into key-value pairs. 7. __________ uses regexp groups instead of a splitting pattern or position.