Step 1 Add up all of the numbers in the set. First add the numbers up. Then divide that sum by the number of addends.
The mean or the average of all the numbers in the set is 3.
941747814 Finding the mean. Range is equal to maximum value minus minimum value which gives us. To calculate the mean simply add all of your numbers together. Calculate the mean median mode and range for 3 19 9 7 27 4 8 15 3 11.