Statisticshard · Past Paper
The median of 11, 12, 14, 18, x, 22, 25, 28 (arranged in ascending order) is 20. Find x.
A19
B20
C21
D22
✓ Correct Answer: B — 20
N=8 (even). Median = (4th + 5th)/2. 20 = (18 + x)/2 => 40 = 18 + x => x = 22. Wait, check data count: 11,12,14,18,x,22,25,28. That's 8 items. 4th=18, 5th=x. Correct.
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