When extreme values are present in a set of data,which of the following descriptive summary measures are most appropriate?
A)Coefficient of variation and range
B)Mean and standard deviation
C)Interquartile range and median
D)Variance and interquartile range

Question

Quizplus · Accepted Answer

When extreme values are present in a set of data, the median and interquartile range are more appropriate than the mean and standard deviation. This is because the median is a measure of central tendency that is not affected by outliers, and the interquartile range is a measure of variability that is not influenced by outliers. The coefficient of variation and range may not be reliable when there are extreme values, and variance is affected by outliers. Therefore, the best choice is C - Interquartile range and median.

When Extreme Values Are Present in a Set of Data,which