If a data set has an even number of observations, the median
A) cannot be determined.
B) is the average value of the two middle items.
C) must be equal to the mean.
D) is the average value of the two middle items when all items are arranged in ascending order.

Question

Quizplus · Accepted Answer

When a data set has an even number of observations, the median is calculated by taking the average of the two middle numbers after arranging all the observations in ascending order.

If a Data Set Has an Even Number of Observations