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R Introduction: Part I

bookGrades Summary

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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.

Løsning

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Sektion 3. Kapitel 6
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bookGrades Summary

Opgave

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.

Løsning

Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

Sektion 3. Kapitel 6
single

single

close

Awesome!

Completion rate improved to 3.85

bookGrades Summary

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Opgave

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.

Løsning

Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

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