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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

Logical Types

Let's now turn our attention to logical data types.

For instance, if you evaluate 2 > 1, it will return TRUE because 2 is indeed greater than 1. This principle will be highly relevant in later chapters.

Numbers and strings (text) can also be converted to logical types. Any number except 0 will be converted to TRUE (0 converts to FALSE), and the strings 'F', 'false', 'False', and 'FALSE' will convert to the logical FALSE. The same principle applies for logical TRUE.

When converting logical values to numbers, FALSE becomes 0, and TRUE becomes 1.

Task

  1. Assign the result of the expression 19*54 > 76*13 to the variable logic.
  2. Show the value of the logic variable.
  3. Show the data type of the logic variable.
  4. Convert the logic variable to an integer and show the result.

Avoid using the print() function.

Task

  1. Assign the result of the expression 19*54 > 76*13 to the variable logic.
  2. Show the value of the logic variable.
  3. Show the data type of the logic variable.
  4. Convert the logic variable to an integer and show the result.

Avoid using the print() function.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Section 2. Chapter 4
toggle bottom row

Logical Types

Let's now turn our attention to logical data types.

For instance, if you evaluate 2 > 1, it will return TRUE because 2 is indeed greater than 1. This principle will be highly relevant in later chapters.

Numbers and strings (text) can also be converted to logical types. Any number except 0 will be converted to TRUE (0 converts to FALSE), and the strings 'F', 'false', 'False', and 'FALSE' will convert to the logical FALSE. The same principle applies for logical TRUE.

When converting logical values to numbers, FALSE becomes 0, and TRUE becomes 1.

Task

  1. Assign the result of the expression 19*54 > 76*13 to the variable logic.
  2. Show the value of the logic variable.
  3. Show the data type of the logic variable.
  4. Convert the logic variable to an integer and show the result.

Avoid using the print() function.

Task

  1. Assign the result of the expression 19*54 > 76*13 to the variable logic.
  2. Show the value of the logic variable.
  3. Show the data type of the logic variable.
  4. Convert the logic variable to an integer and show the result.

Avoid using the print() function.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Section 2. Chapter 4
toggle bottom row

Logical Types

Let's now turn our attention to logical data types.

For instance, if you evaluate 2 > 1, it will return TRUE because 2 is indeed greater than 1. This principle will be highly relevant in later chapters.

Numbers and strings (text) can also be converted to logical types. Any number except 0 will be converted to TRUE (0 converts to FALSE), and the strings 'F', 'false', 'False', and 'FALSE' will convert to the logical FALSE. The same principle applies for logical TRUE.

When converting logical values to numbers, FALSE becomes 0, and TRUE becomes 1.

Task

  1. Assign the result of the expression 19*54 > 76*13 to the variable logic.
  2. Show the value of the logic variable.
  3. Show the data type of the logic variable.
  4. Convert the logic variable to an integer and show the result.

Avoid using the print() function.

Task

  1. Assign the result of the expression 19*54 > 76*13 to the variable logic.
  2. Show the value of the logic variable.
  3. Show the data type of the logic variable.
  4. Convert the logic variable to an integer and show the result.

Avoid using the print() function.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Let's now turn our attention to logical data types.

For instance, if you evaluate 2 > 1, it will return TRUE because 2 is indeed greater than 1. This principle will be highly relevant in later chapters.

Numbers and strings (text) can also be converted to logical types. Any number except 0 will be converted to TRUE (0 converts to FALSE), and the strings 'F', 'false', 'False', and 'FALSE' will convert to the logical FALSE. The same principle applies for logical TRUE.

When converting logical values to numbers, FALSE becomes 0, and TRUE becomes 1.

Task

  1. Assign the result of the expression 19*54 > 76*13 to the variable logic.
  2. Show the value of the logic variable.
  3. Show the data type of the logic variable.
  4. Convert the logic variable to an integer and show the result.

Avoid using the print() function.

Switch to desktop for real-world practiceContinue from where you are using one of the options below
Section 2. Chapter 4
Switch to desktop for real-world practiceContinue from where you are using one of the options below
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