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Lesson Example Discussion Quiz: Class Homework

Lesson

Title: Measures of variation-Range

Grade: 9-a Lesson: S1-L7

Explanation: Hello students, let us learn a new topic in statistics today with definitions, concepts, examples, and worksheets included.

Lesson:

Definition: Measures of variation

  • Measures of variation summarize the spread of a data set.

  • They describe how measurements differ from each other and/or from their mean.
1

Explanation: The three most commonly used measures of variation are

  • Range

  • Interquartile range and

  • Standard deviation.

Definition: Range

  • Difference between the maximum and minimum value of the data is referred as range.

  • Range = maximum value - minimum value
2

Explanation: Steps to calculate the range:

  1. Arrange the data in ascending order

  2. Subtract the lowest value from the highest value.

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