Q 62. The mean of a data set is 25, and the sum of the deviations from the mean is 0. What is the number of observations in the data set? Ops: A 5 B. Cannot be determined C8 D. 6
Question
Q 62. The mean of a data set is 25, and the sum of the deviations from the mean is 0. What is the number of observations in the data set?
Ops: A 5
B. Cannot be determined
C8
D. 6
Solution
The answer is B. Cannot be determined.
Here's why:
The sum of the deviations from the mean is always 0, regardless of the number of observations in the data set. This is a property of the mean. Therefore, knowing that the sum of the deviations from the mean is 0 does not provide any information about the number of observations in the data set.
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