To find the mean (also called the average) of a set of numbers in math, follow these steps:

1. Add all the numbers together to get their total sum.
2. Count how many numbers are in the set.
3. Divide the sum by the number of numbers.

The formula for the arithmetic mean is:

Mean=Sum of all numbersNumber of numbers\text{Mean}=\frac{\text{Sum of all numbers}}{\text{Number of numbers}}Mean=Number of numbersSum of all numbers​

For example, if you have the numbers 3, 11, 4, 6, 8, 9, and 6:

• Sum = 3 + 11 + 4 + 6 + 8 + 9 + 6 = 47
• Number of numbers = 7
• Mean = 47 ÷ 7 ≈ 6.7

So, the mean is approximately 6.7

. This method works for any set of numbers, including negative numbers. Just add all values (treating negatives as subtracting) and divide by the count