SAT Math Multiple Choice Question 700: Answer and Explanation

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Question: 700

10. Images

What is the median number of credits these students received the previous semester?

  • A. 10.5
  • B. 11.5
  • C. 12
  • D. 12.5

    image

Correct Answer: D

Explanation:

D

Data Analysis (histogram/central tendency) MEDIUM

Data set: 8, 9, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 15, 15, 15, 15, 15, 15, 15, 16, 18

The median of a set of numbers is the "middle" number of the set when the numbers are listed in order. If the set contains an odd number of numbers, the median is the middle number, but if the set contains an even number of numbers, it is the average of the two middle numbers. Since this set contains 24 numbers, the median is the average or the 12th and the 13th numbers. The 12th number in the set is 12, and the 13th number in the set is 13, the median is 12.5.

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