Which measure of variability is appropriate when a sample is likely to contain one or several extreme values?
A)The variance.
B)The standard deviation.
C)The interquartile range.
D)The range.

Question

Quizplus · Accepted Answer

The interquartile range (IQR) is the best choice when a sample is likely to contain one or several extreme values because it is not affected by outliers or extreme values. The IQR is calculated by subtracting the 25th percentile (Q1) from the 75th percentile (Q3) and provides information on the spread of the middle 50% of the data, which is less influenced by extreme values.

Which Measure of Variability Is Appropriate When a Sample Is