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R Introduction: Part I
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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

Grades Summary

Complete the task using the grades data.

Tarefa

  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.

Tarefa

  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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Seção 3. Capítulo 6
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Grades Summary

Complete the task using the grades data.

Tarefa

  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.

Tarefa

  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.

Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo

Tudo estava claro?

Seção 3. Capítulo 6
toggle bottom row

Grades Summary

Complete the task using the grades data.

Tarefa

  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.

Tarefa

  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.

Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo

Tudo estava claro?

Complete the task using the grades data.

Tarefa

  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.

Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Seção 3. Capítulo 6
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
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