Question: In table 7.1, the estimated standard deviations for b are close to, but not identical with, the true standard deviations. (a) Why might the estimated

In table 7.1, the estimated standard deviations for b are close to, but not identical with, the true standard deviations.

(a) Why might the estimated standard deviations in the third column differ from the true standard deviations in the second column? What could we do to make them more accurate?

(b) Why might the estimated standard deviations in the fourth column differ from the true standard deviations in the second column? What could we do to make them more accurate?

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