Question

Explain the following
a) class interval
b) class size

Answer 1

Difference between the true upper limit and lower limit of a class interval is called the class size.

The data is arranged into different classes and the width of such class is called class interval.

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Answer 2

a) The size of each class into which a rage of a variable is divided, as represented by the divisions of a histogram or a bar chart is known as class interval.
b) The number of students a teacher faces during a given period of time is known as class size.