A class interval is a term used in statistics to denote 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. In statistics, data is arranged into different classes, and the width of such classes is called a class interval. The class interval is calculated by subtracting the lower class limit from the upper-class limit. The following formula can be used to calculate the class interval:
Class Interval = Upper-Class limit – Lower class limit
For example, if we have a frequency distribution table that represents the number of wins by different basketball teams, we can calculate the class interval by finding the difference between the upper class limit and the lower class limit for each class.
