[RFC]: add `stats/incr/wvariance`
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difficulty: 1
Feature
priority: Normal
RFC
Statistics
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- JavaScript
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Description
Incremental weighted sample variance.
Package: `@stdlib/stats/incr/wvariance`
Alias: `incrwvariance`
See `@stdlib/math/generics/statistics/incrvariance` for the non-weighted package.
See https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/incr for similar packages.
See reference [literature](https://en.wikipedia.org/wiki/Algorithms_for_calculating_variance#Weighted_incremental_algorithm).
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