Plywood Inc reported these returns on stockholder equity for the
Plywood Inc. reported these returns on stockholder equity for the past 5 years: 4.3, 4.9, 7.2, 6.7, and 11.6. Consider these as population values.
a. Compute the range, the arithmetic mean, the variance, and the standard deviation.
b. Compare the return on stockholder equity for Plywood Inc. with that for Dennis Indus-tries cited in Exercise 44.

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