# Statistics Examples

Step 1

Find the midpoint for each class.

Step 2

Multiply the frequency of each class by the class midpoint.

Step 3

Simplify the column.

Step 4

Add the values in the column.

Step 5

Add the values in the frequency column.

Step 6

The mean (mu) is the sum of divided by , which is the sum of frequencies.

Step 7

The mean is the sum of the product of the midpoints and frequencies divided by the total of frequencies.

Step 8

Simplify the right side of .