Question

Compare and interpret the measures to select the data with the least variation.

This table provides a comparison of data sets with their mean and standard deviation.

Data Set Mean Standard Deviation
A 21 1.9
B 29 1.41
C 25 1.2
D 48 1.14
Which data set has the least variation?

(1 point)

Data Set B

Data Set C

Data Set D

Data Set A

Answer 1

Data Set D.

It has the smallest standard deviation (1.14), so it shows the least variation. (Even relative to the mean, D’s coefficient of variation 1.14/48 ≈ 2.38% is the smallest.)