Question
Download Solution PDFIf both the mean and the standard deviation of 50 observations x1, x2, …,x50 are equal to 16, then the mean of(x1 - 4)2, (x2 - 4)2,….(x50 - 4)2 is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven, mean and standard deviation of the 50 observations are equal to 16.
Mean,
∴ ∑xi = 16 × 50
Standard deviation,
Required mean
= 256 × 2 + 16 - 8 × 16
= 528 - 128 = 400
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