Statistical Techniques in Business and Economics
Statistical Techniques in Business and Economics
18th Edition
ISBN: 9781260579611
Author: Douglas Lind; William Marchal; Samuel Wathen
Publisher: MCGRAW-HILL HIGHER EDUCATION
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A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.
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Chapter 3, Problem 45E

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.

  1. a. Compute the range, the arithmetic mean, the variance, and the standard deviation.
  2. b. Compare the return on stockholder equity for Plywood Inc. with that for Dennis Industries cited in Exercise 44.

44. Referring to Exercise 43, the annual report of Dennis Industries also gave these returns on stockholder equity for the same 5-year period (in percent): 13.2, 5.0, 10.2, 17.5, and 12.9.

  1. a. What is the arithmetic mean return?
  2. b. What is the variance?
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Statistical Techniques in Business and Economics

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