Which two statistics offer robust measures of center when outliers are present?
A)Mean and mode.
B)Median and trimmed mean.
C)Midrange and geometric mean.
D)Variance and standard deviation.

Question

Quizplus · Accepted Answer

The median is the middle value when a set of data is arranged in order, and it is not affected by outliers. The trimmed mean is the mean after a certain percentage of outliers have been removed from the dataset. These two statistics provide robust measures of center in the presence of outliers. The mean and mode are sensitive to outliers, and the midrange and geometric mean are less commonly used measures of center. Variance and standard deviation are measures of variability, not center.

Which Two Statistics Offer Robust Measures of Center When Outliers