Which term signifies a statistical measure that represents the average deviation of a set of values?

The term that signifies a statistical measure representing the average deviation of a set of values is indeed the mean. The mean, often referred to as the average, is calculated by summing all values and dividing that sum by the total number of values. This measure effectively conveys a central point around which the values are distributed.

In this context, the mean serves as a key indicator of where most data points lie within a dataset. Furthermore, when combined with concepts such as the standard deviation, it provides insights into how much individual values deviate from this average, shedding light on the data's dispersion.

Other terms may have specific roles in statistics: the mode identifies the most frequently occurring value, the median represents the midpoint in a dataset when it is ordered from lowest to highest, and the range calculates the difference between the highest and lowest values. However, none of these measure the average deviation of values in the way that the mean does, making it the correct choice.