Question: 5. Refer to Example 1.6-3. (a) Use the information on the statistical population of productivity ratings given in the example to calculate the population variance

5. Refer to Example 1.6-3.

(a) Use the information on the statistical population of productivity ratings given in the example to calculate the population variance and standard deviation.

(b) Use the sample of 10 productivity ratings given in the example to calculate the sample variance and standard deviation.

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