All eight companies in the aerospace industry were surveyed as to their return on investment last year.
Question:
All eight companies in the aerospace industry were 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%.
Calculate the
(a) Range
(b) Arithmetic mean
(c) Variance, and
(d) Interpret the statistics.
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Related Book For
Statistical Techniques In Business And Economics
ISBN: 9781260239478
18th Edition
Authors: Douglas Lind, William Marchal, Samuel Wathen
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