alleryThe mean of 30 observations is 40. One value 63 was read as 36. The correct mean is
A40.9
B41.2
C40.5
D41.9
Answer & Solution
Correct answer: A. 40.9
Corrected total is 1200 + 27 = 1227, and 1227 / 30 = 40.9.
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