Maria surveyed girls on the amount (in $) they spent on a dress for the middle school spring fling:

79, 79, 79, 82, 84, 85, 89, 90, 99, 100, 100, 100, 129, 139, 155, 174, 189, 200, 209, 250

Which measure of variability—IQR or MAD—best describes the spread of the dataset?

(1 point)
Responses

IQR; the data distribution is symmetrical
IQR; the data distribution is symmetrical

MAD; the data distribution has outliers
MAD; the data distribution has outliers

MAD; the data distribution is symmetrical
MAD; the data distribution is symmetrical

IQR; the data distribution is skewed

1 answer

IQR; the data distribution is skewed

In this case, the Interquartile Range (IQR) would be a better measure of variability as the data distribution is skewed. MAD would not be as useful in this scenario since there are outliers in the data.