if in a data smallest value is 27, the largest value is 48 and the size of the class interval is 3 then the number of classes will be _________?

To determine the number of classes, we can use the formula:

Number of classes = (largest value - smallest value) / class interval size

Given:

Smallest value = 27

Largest value = 48

Class interval size = 3

Substituting the given values into the formula:

Number of classes = (48 - 27) / 3

calculating the subtraction:

Number of classes = 21 / 3

Simplifying the division:

Number of classes = 7