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Mathematics 7 Online
OpenStudy (anonymous):

How do you find the standard deviation? The varience I found was 1.81 and the expected value is 3.7..

OpenStudy (isaiah.feynman):

\[S.D=\sqrt{variance}\]

OpenStudy (anonymous):

I did that but I got marked wrong unless I'm supposed to do something else. The answer I got was 1.34

OpenStudy (isaiah.feynman):

Well that's the formula. Check your calculations from the beginning.

OpenStudy (anonymous):

My calculations are right but maybe its the website so i'll just ask my professor.

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