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Data Analysis with R - Second Edition by Tony Fischetti

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Exercises

Practice the following exercises to revise the concept of reproducibility learned in this chapter:

  • Review: When we created the data frame from nothing, we combined a vector of 1,000 binomially distributed random variables, 1,000 normally distributed random variables, and a vector of two colors, red and white. Since all the columns in a data frame have to be the same length, how did R allow this? What is the property of vectors that allows this?
  • Seek out, read, and attempt to understand the source code of some of your favorite R packages. What version control system is the author of the package using?
  • Carefully review the analysis that was used as an example in this chapter. In what manner can this analysis be improved upon? Look ...

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