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R Introduction: Part I
course content

Course Content

R Introduction: Part I

R Introduction: Part I

1. Basic Syntax and Operations
Why R?Basic ArithmeticUsing the print() Function Comments in RInteger Division and RemaindersExponentiationcat() FunctionVariablesRevenue CalculationAssignment Operators
2. Basic Data Types and Vectors
Data TypesNumbersType ConversionLogical TypesVectorsLabeling VectorsIndexing in VectorsModifying VectorsDeleting Elements from VectorsArithmetic Operations with Vectors
3. Factors
What is a Factor?Indexing in FactorsLevelsCounting ValuesGrouping Numeric DataGrades Summary

bookGrades Summary

Complete the task using the grades data.

Task

  1. Call the summary() function on your grades_f variable to output the number of occurrences of each factor grade.
  2. Calculate the proportion of each grade, dividing the result of summary(grades_f) by the total number of observations using the length() function applied to the grades_f variable.

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Section 3. Chapter 6
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bookGrades Summary

Complete the task using the grades data.

Task

  1. Call the summary() function on your grades_f variable to output the number of occurrences of each factor grade.
  2. Calculate the proportion of each grade, dividing the result of summary(grades_f) by the total number of observations using the length() function applied to the grades_f variable.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 6
toggle bottom row

bookGrades Summary

Complete the task using the grades data.

Task

  1. Call the summary() function on your grades_f variable to output the number of occurrences of each factor grade.
  2. Calculate the proportion of each grade, dividing the result of summary(grades_f) by the total number of observations using the length() function applied to the grades_f variable.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Complete the task using the grades data.

Task

  1. Call the summary() function on your grades_f variable to output the number of occurrences of each factor grade.
  2. Calculate the proportion of each grade, dividing the result of summary(grades_f) by the total number of observations using the length() function applied to the grades_f variable.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 3. Chapter 6
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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