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Home » Quiz » R Programming Quiz

How do you check if a value is a number in R?

Difficulty level
  • Use is.character() function
  • Use is.integer() function
  • Use is.logical() function
  • Use is.numeric() function
The is.numeric() function in R is used to check if a value or a vector is numeric. It returns TRUE if the value is numeric and FALSE otherwise.
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R Programming Quiz
Quiz
Imagine you want to calculate the remainder of a division operation in R. How would you do that?
The ______ function in R can be used to apply a function to each element of a vector or columns of a data frame.

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