American Institute of Certified Planners (AICP) Practice Exam

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What is the median of the numbers 12, 14, 16, 18?

The correct answer is: 15

To find the median of the set of numbers 12, 14, 16, and 18, one must first understand that the median is the middle value of a sorted list of numbers. Since there are four numbers in this case, the median will be the average of the two middle numbers after the data is arranged in ascending order. Arranging the numbers in order, we have: 12, 14, 16, 18. The two middle numbers are 14 and 16, as they occupy the second and third positions in this ordered list. To calculate the median, you take the average of these two values: (14 + 16) / 2 = 30 / 2 = 15. Thus, the correct answer is 15, confirming that the median of the set is indeed 15, as it represents the central tendency of the data. This median value provides a meaningful representation of the data set as it is not influenced by extreme values.