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Mathematics 21 Online
OpenStudy (anonymous):

The test scores of 6 algebra students are: 65, 82, 75, 95, 84, 70. Find the standard deviation of these test scores.

OpenStudy (displayerror):

This website will help a lot: http://www.mathsisfun.com/data/standard-deviation.html First find the mean, then the variance, then take the square root to get the standard deivation.

OpenStudy (anonymous):

Thanks :)

OpenStudy (anonymous):

9.84462628374824

OpenStudy (anonymous):

lol, do you have a answer choice? I would go with 10

OpenStudy (anonymous):

The closest choices are 10.78 or 10.25

OpenStudy (anonymous):

10.7842477716343

OpenStudy (anonymous):

10.78 is right

OpenStudy (anonymous):

Thank you! :)

OpenStudy (anonymous):

Np :)

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