Mean, Mode, Median, Range

1. Mean

The mean average is not always a whole number.

The mean is the total of the numbers divided by how many numbers there are.

To work out the mean:

Let we have the numbers 7, 9, 11, 6, 13, 6, 6, 3, 11

Step 1:

Add up all the numbers.

7 + 9 + 11 + 6 + 13 + 6 + 6 + 3 + 11 = 72

Step 2:

Divide the answer by how many numbers there are. There are 9 numbers.

72 ÷ 9 = 8

So the mean value is 8.

2.   Mode

The mode is the value that appears the most.

Let we have the numbers 7, 9, 11, 6, 13, 6, 6, 3, 11

To work out the mode:

Step 1:  

Put the numbers in order:

3, 6, 6, 6, 7, 9, 11, 11, 13

Step 2:

Look for the number that appears the most.

6 appears more than any other number.