tree c5b119b625b241203d55bcbe8b2561e679e02ae7
parent a2efd4fad5498b2f8b42b75c07f5bd96caba0b66
author Alex Herbert <aherbert@apache.org> 1629536689 +0100
committer Alex Herbert <aherbert@apache.org> 1629536689 +0100

Add variance tests for zero weights

Update javadoc for the behaviour when input weights are zero.

This issue was found when checking the sonar report for the variance
class which has a potential divide by zero if the weights sum to zero.