Measures of central tendency are the most commonly used statistics among researchers. This chapter covers three such measures, including the mode, the median, and the mean. The conditions under which each is appropriately applied is considered, especially regarding the shape of the distribution of scores and the level of measurement. Readers learn to calculate the measures of central tendency for both simple and grouped frequency distributions. Special attention is given to the mean as the only measure of central tendency that can be used for further statistical operations.