Statisticsmedium · Past Paper
If the mean of 6, 7, x, 8, 12 is 9, what is the value of x?
A10
B11
C12
D13
✓ Correct Answer: C — 12
Mean = Sum/N. 9 = (6+7+x+8+12)/5. 45 = 33 + x. x = 12.
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