Statisticsmedium · Past Paper
If the mean of 6, 8, 5, 7, x and 4 is 7, then x is:
A12
B10
C8
D9
✓ Correct Answer: A — 12
(6+8+5+7+x+4)/6 = 7 => 30+x = 42 => x = 12.
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