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R Introduction

bookGrades Summary

Task

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You have already created a factor vector, grades_f, which assigns each numeric grade into one of five categories ('F', 'D', 'C', 'B', 'A'). Your goal is to:

  1. Call the summary() function on your grades_f variable to output the number of occurrences of each factor grade.
  2. Divide those counts by the total number of grades, computed by calling length() function on grades_f variable, to obtain the relative frequency of each grade.

Solution

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SectionΒ 3. ChapterΒ 6
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bookGrades Summary

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Task

Swipe to start coding

You have already created a factor vector, grades_f, which assigns each numeric grade into one of five categories ('F', 'D', 'C', 'B', 'A'). Your goal is to:

  1. Call the summary() function on your grades_f variable to output the number of occurrences of each factor grade.
  2. Divide those counts by the total number of grades, computed by calling length() function on grades_f variable, to obtain the relative frequency of each grade.

Solution

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Everything was clear?

How can we improve it?

Thanks for your feedback!

close

Awesome!

Completion rate improved to 2.27
SectionΒ 3. ChapterΒ 6
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