Question

32, 40, 34, 31, 20, 36, 40, 31. How does the outlier affect the mean? If necessary, round to the nearest tenth.

Answer 1

An outlier is the number that is farthest away from the main data set. So the numbers 32, 40, 34, 31, 36, 40, and 31 are all relatively close but if you look at 20, it's a lot farther away. Therefore, 20 is the outlier in this problem.