Which of the following is the best measure of variability if the distribution of a set of data is skewed?
A) The standard deviation.
B) The variance.
C) The median.
D) The interquattile range.

Question

Which of the following is the best measure of variability if the distribution of a set of data is skewed? 
A) The standard deviation.
B) The variance.
C) The median.
D) The interquattile range.

Quizplus · Accepted Answer

The interquartile range is the best measure of variability if the distribution of a set of data is skewed because it is not affected by extreme values or outliers, which can heavily influence the standard deviation and variance. The median is a measure of central tendency and not a measure of variability.

Which of the Following Is the Best Measure of Variability