![Definition of mean](https://maths.olympiadsuccess.com/assets/images/maths_square_dictionary/mean.jpg)
Mean is defined by the average of the numbers, calculated by the "central" value of a set of numbers. To find the mean we have to add up all the numbers, then divide by the total count of numbers. Example: find the mean of 2, 7 and 9? Add the numbers: 2