Find the median of: 53, 52, 55, 26, 25, 32, 57.

Sort the values first; the median is the middle value (or the mean of the two middle values). The correct answer is 52. Traps to avoid: 41 comes from the "midrange" error; 43 comes from the "mean not median" error; 57 comes from the "took maximum" error; 26 comes from the "unsorted middle" error.