Question

The following frequency distribution shows the price per share of the 30 companies in the Dow Jones Industrial Average (Barron's, February 2, 2009).
a. Compute the mean price per share and the standard deviation of the price per share for the Dow Jones Industrial Average companies.
b. On January 16, 2006, the mean price per share was $45.83 and the standard deviation was $18.14. Comment on the changes in the price per share over the three-year period.


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  • CreatedSeptember 20, 2015
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