WHAT IS THE MEAN

http://www.mathsisfun.com/definitions/mean.html

Example

Your numbers are 7, 9, 5, 3, 15, 15. There are 6 numbers all together
To find the mean you need to all all the numbers and divide by how many there.

7 + 9 + 5 + 3 + 15 + 15 = 54

54/6= 9

the mean is when you add all the numbers on the problem together the divide it by how many numbers you have

To calculate the mean, also known as the average, of a set of numbers, follow these steps:

1. Add up all the numbers in the set.
2. Count how many numbers are in the set.
3. Divide the sum of the numbers by the count.

For example, let's find the mean of the set {3, 6, 9, 12}:

1. Add up the numbers: 3 + 6 + 9 + 12 = 30.
2. Count how many numbers are in the set: There are 4 numbers.
3. Divide the sum by the count: 30 รท 4 = 7.5.

Therefore, the mean of the set {3, 6, 9, 12} is 7.5.