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The mean of 25 observations is 36. Later 43 was found to be misread as 34. What is the correct mean?

A37.00
B36.00
C36.36
D36.09
Answer & Solution
Correct answer: C. 36.36
The total rises by 9, so the mean rises by 9/25 = 0.36 to 36.36.
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