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Working with categorical data in R without losing your mind - Amelia McNamara
Working with categorical data in R without losing your mind - Amelia McNamara

Categorical data, called “factor” data in R, presents unique challenges in data wrangling. R users often lo...

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Solving R for data science - Jeffrey Arnold
Solving R for data science - Jeffrey Arnold

While teaching a course using "R for Data Science", I wrote a complete set of solutions to its exercises an...