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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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pharmdwannabe pharmdwannabe
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A year ago

The following frequency distribution shows the time (in minutes) that a sample of students uses the computer terminals per day.

 

Time

Frequency

20 - 39

2

40 - 59

4

60 - 79

6

80 - 99

4

100 - 119

2


 

a.Compute the mean.
b.Compute the variance.
c.Compute the standard deviation.
d.Compute the coefficient of variation.

Textbook 
Essentials of Statistics for Business and Economics

Essentials of Statistics for Business and Economics


Edition: 7th
Authors:
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birdnuggetbirdnugget
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A year ago
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pharmdwannabe Author
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A year ago
You make an excellent tutor!
byehoe
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Yesterday
Thanks for your help!!
Evolution
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2 hours ago
Good timing, thanks!
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