Variance calculated is wrong

scalanlp / breeze

Breeze is/was a numerical processing library for Scala.

https://www.scalanlp.org

Apache License 2.0

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Closed FranGoitia closed 6 years ago

FranGoitia commented 7 years ago

import breeze.linalg.DenseVector
import breeze.stats.variance

variance(DenseVector(1.0, 4.0, 7.0))
res1: Double = 9.0

Using Scala 2.12.1 with latest breezer version

darrenjw commented 7 years ago

This is correct. See #553.