Are there any prerolled streaming statistics libraries for Perl à la: http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance#On-line_algorithm
I haven't found anything on CPAN yet and I really don't want to have to code one myself.
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You want Statistics::Descriptive. The regular "sparse" version of the module (not Statistics::Descriptive::Full
) provides statistics that are available without storing the entire dataset; variance is one of them.
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