Statisticsmedium · Past Paper
The following is a list of shoe sizes: 5, 6, 7, 7, 8, 9. If a shoe size of 7 is added, which measure will definitely change?
AMode
BMean
CRange
DMedian
✓ Correct Answer: B — Mean
Adding any value changes the sum, thus changing the mean. Mode (7) and Range (9-5=4) remain the same. Median may or may not change.
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