The sample of eight companies in the aerospace industry, referred to in Exercise 38, was surveyed as

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The sample of eight companies in the aerospace industry, referred to in Exercise 38, was surveyed as to their return on investment last year. The results are 10.6, 12.6, 14.8, 18.2, 12.0, 14.8, 12.2, and 15.6.

a. Compute the sample variance.

b. Determine the sample standard deviation.

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Statistical Techniques in Business and Economics

ISBN: 978-0078020520

16th edition

Authors: Douglas Lind, William Marchal

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Question Posted: Dec 10, 2014 07:04 AM

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The sample of eight companies in the aerospace industry, referred to in Exercise 38, was surveyed as

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Statistical Techniques in Business and Economics

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