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July 28, 2015

Homework Help: Math-statistics

Posted by Jodine on Friday, December 12, 2008 at 10:00pm.

The annual sales, in millions of dollars, for 28 toy department stores is listed.
38 35 43 27 24 40 38
21 34 27 35 36 24 33
27 33 44 45 23 33 33
24 33 27 32 35 29 31
A)Calculate the mean,(u), and standard deviationof the data. Answer to the nearest tenth.
(My answer): U=32.3 SD=6.3
B) Calculate the percent sales, to the nearest whole number
i)Within one SD of the mean.
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ii)Within two SD of the mean.
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