Problem-Solving and Data AnalysisEasy–MediumMean minus median of a small data set
Problem-Solving and Data Analysis practice question
For the data set 4, 7, 7, 9, 13, what is the mean minus the median?
Answer: 1
Mean = 40 ÷ 5 = 8; median (middle value) = 7. Mean − median = 1.
Common wrong answers
- If you answered 0
- 0 comes from taking the mode (7) as the mean.
- If you answered 8
- 8 is the mean alone.
- If you answered -1
- −1 reverses the subtraction.
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