Question: Using the definitional formula for variance, why do we square each deviation before summing in the numerator of the formula? a. If we did not

Using the definitional formula for variance, why do we square each deviation before summing in the numerator of the formula?

a. If we did not square deviations, then the solution would always be 0 when we sum the deviations.

b. The sum of the squared differences of scores from their mean is minimal.

c. Both a and b.

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