Statisticsmedium · Past Paper
If the median of the data arranged in ascending order: 10, 12, 14, x-1, x+1, 20, 22, 25 is 17, find x.
A17
B16
C18
D15
✓ Correct Answer: A — 17
There are 8 terms. Median = average of 4th and 5th terms = ((x-1) + (x+1)) / 2 = 17. 2x / 2 = 17, so x = 17.
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