Which measure of variability is probably best when the data is skewed?
A) Variance
B) Range
C) Standard deviation
D) Interquartile range

Question

Quizplus · Accepted Answer

The interquartile range (IQR) is less affected by extreme values or outliers, making it a better choice for skewed data. The range is too heavily influenced by extreme scores, while variance and standard deviation assume that the data is normally distributed, which may not be the case with skewed data.

Which Measure of Variability Is Probably Best When the Data