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OpenStudy (anonymous):
A student has the following grades: 86, 80, 79, 85, 70. Find the standard deviation of the grades. 1) 1640.5 2) 5.69 3) 40.5 4) 32.4
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OpenStudy (amistre64):
sd = sqrt(variance)
OpenStudy (amistre64):
\[\sigma = \sqrt{\frac{\sum (x-\mu)^2}{n}}\]
OpenStudy (anonymous):
@tana Should you just enter into the calculator, use the Stat - var char option!
OpenStudy (anonymous):
its 32.4
OpenStudy (anonymous):
I don't have the appropriate calculator now!
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OpenStudy (amistre64):
its the sqrt(32.4)
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