What statistical measure is calculated by adding all values and dividing by the number of values?

The mean is a statistical measure that is determined by summing all the values in a data set and then dividing that total by the number of values present. This process provides a representation of the central tendency of the data, as it gives an average value that can be used to understand the distribution of numbers.

For example, if you have a set of test scores, calculating the mean would give you an idea of the overall performance of the group. This measure is particularly useful in many fields, including behavioral analysis, where understanding the typical or average behaviors can help in designing interventions and settings for clients.

Other statistical measures mentioned serve different purposes: the median identifies the middle value of a data set, the mode indicates the most frequently occurring value, and the range calculates the difference between the highest and lowest values. Each measure provides unique insights, but when focusing on the concept of averaging all values, the mean is the appropriate choice.