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OpenStudy (anonymous):
How to find variance in a frequency distribution?
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OpenStudy (anonymous):
would you use:\[s^2=(\sum(x^2)-[(\sum(x)^2)]/n)/n-1\]
OpenStudy (blurbendy):
Are you dealing with a range of values?
OpenStudy (anonymous):
they gave me 458, 497, 600, 1088, 1240, 1480, 1925, 2343
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