Github user LosD commented on the issue:
https://github.com/apache/metamodel/pull/128
Here's a quick test of the difference between float and long averages:
https://gist.github.com/LosD/d6d3bd6b2615375d840dcded45e9b898
The bigger the difference between sum and count, the bigger the chance.
Using the values above (random number of any possible long / random positive
integer) I get ~0.00028% failures. Limiting count to 0 < count < 100000, I get
~2.26% failures. Limiting the sum to only int values, I get 0% failures.
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