a. For what value of c is the quantity (xi - c)2 minimized? b. Using the result

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a. For what value of c is the quantity ∑(xi - c)2 minimized?
b. Using the result of part (a), which of the two quantities ∑(xi - )2 and ∑(xi - μ)2 will be smaller than the other (assuming that  ≠ μ)?
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