Question

Which set of data has 3 modes?

A. 21, 24, 21, 26, 24, 27, 25, 24, 21, 28

b. 27, 24, 22, 26, 29, 27, 25, 23, 21, 28

c. 27, 24, 21, 26, 24, 27, 25, 23, 27, 28

d. 27, 24, 21, 26, 24, 27, 25, 23, 21, 28

2. Which change would affect the mode?
21, 19, 38, 24, 21, 3, 23, 21

a eliminating all outliers

b adding another data point

c eliminating the high-end outlier

d decreasing each number by 1