Geoffrey is looking at two datasets, each of which has the same mean. How can he determine which of the two datasets has less variability?

Question

A. The dataset with more pieces of data will have less variability.
B. The datasets have the same variability because their means are the same.
C. The dataset with less variability has a smaller deviation.
D. The dataset with less variability has a greater deviation.

Answer 1

C. The dataset with less variability has a smaller deviation.

Standard deviation measures the variability in a dataset, so if one dataset has a smaller standard deviation, it means that it has less variability.