Chapters

## How can you calculate class interval?

Class interval refers to the numerical width of any class in a particular distribution. It is defined as the difference between the upper-class limit and the lower class limit.

Class Interval = Upper-Class limit – Lower class limit.

In statistics, the data is arranged into different classes and the width of such class is called class interval.

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## Class Interval exercise to try

The following data are weights of people on a diet
plan;

{52, 75, 92, 101, 83, 68, 133, 78, 104, 61, 39, 46, 135, 87,
131, 99, 104, 86, 67, 116, 89, 57, 87, 98, 131, 116, 135, 93}

a)      With a class interval of 14, determine how many classes you get

b)      Presents these weights by use of a frequency distribution table

Did you figure it out? Let us know in the comments

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