The sum of the squares of deviations is the least when measured from____________?
Correct answer: A. A.M.
- A. A.M.
- B. Median
- C. Mode
- D. G.M.
Explanation
The arithmetic mean minimizes the sum of squared deviations because the cross-product term vanishes when deviations are taken from the mean. This is the least-squares property of the mean.
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