Statisticseasy · Past Paper
If the mean of 10, 12, 18, 20, p is 15, find p.
A10
B15
C20
D25
✓ Correct Answer: B — 15
Sum = 15 * 5 = 75. 10 + 12 + 18 + 20 + p = 75 => 60 + p = 75 => p = 15.
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