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OpenStudy (anonymous):
how can i find the mean age and standard deviation?
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OpenStudy (anonymous):
OpenStudy (anonymous):
Let the score (denomination) be x let the frequency(Church attendance)
OpenStudy (anonymous):
Now use the equation (Sigmaf times x)/Sigma f to find the mean
OpenStudy (anonymous):
The standard deviation is the square root of the variance, http://en.wikipedia.org/wiki/Normal_distribution But I would hesitate to apply this here as it's not a bell curve of results
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