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How many functions exist for tidying the data?

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How many functions exist for tidying the data?

(a) one

(b) two

(c) three

(d) four

This question was posed to me in an international level competition.

I want to ask this question from Data Wrangling topic in chapter Profiling, Simulation and Data Analysis of R Programming

1 Answer

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Best answer
Correct option is (c) three

Easiest explanation: tidyr provides three main functions for tidying your messy data: gather(), separate() and spread().

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