Which operation would you use to find the average of a set of numbers?

To find the average of a set of numbers, you first need to add all the numbers together to find their total sum. Once you have the total sum, you divide that sum by the number of values in the set. This division gives you the average, or the mean, of the set of numbers. Thus, the operation used to calculate the average is division, as it is essential to distribute the total sum evenly among the total count of numbers. This process ensures that you arrive at a single value that represents the middle point of the data set.