Which of the following is NOT a measure of central tendency?

The range is the correct choice as it is not a measure of central tendency. Measures of central tendency are statistical tools that aim to summarize a set of data by determining a central or typical value within that dataset. The mean, median, and mode all represent ways to find that typical value.

The mean calculates the average of a data set by summing all values and dividing by the count of values. The median identifies the middle number when the values are sorted in order, effectively representing the center in a dataset with an odd or even number of entries. The mode is the value that appears most frequently in the dataset, indicating the most common observation.

In contrast, the range measures the spread or dispersion of a set of values, specifically by determining the difference between the highest and lowest values. It does not provide information about the central value of the data, which is why it is not classified as a measure of central tendency.