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Results tagged with variance
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user 46115
The expected squared deviation of a random variable from its mean; or, the average squared deviation of data about their mean.
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Which distribution has the larger variability? Is variance absolute, or relative to the mean?
Does a large sigma (or variance) mean it's more "variable", or should I be looking for the largest RATIO of sigma to mean? … I can't find any reference to a concept like that in my textbooks, but it seems to me to convey more meaning than a variance/sigma on its own. …
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