What measure of variability is most appropriate for a ratio variable with many outliers?
A) Median
B) Range
C) Interquartile range
D) Variance
E) Standard deviation

Question

Quizplus · Accepted Answer

Interquartile range (IQR) is the most appropriate measure of variability for a ratio variable with many outliers because it is less affected by extreme values than range and standard deviation. The median can also be used as a measure of central tendency, but it does not capture the spread of the data. Variance and standard deviation can be influenced heavily by outliers and may not be representative of the variability of the majority of the data.

What Measure of Variability Is Most Appropriate for a Ratio