To find the mean of a data set, you need to take all the data in the set and add them together.
Example: Sarah scored these numbers on her midterms every quarter: 89, 97, 76, & 62. What is the mean of her test scores?
So, add all the scores together.
89 + 97 + 76 + 62 = 324
After adding the scores together, you need to divide the sum by the number of numbers in the data set.
324 ÷ 4 = 81
So, the mean, or average of her test scores is 81.
I hope I helped :)
- Shay❤