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https://issues.apache.org/jira/browse/MATH-1234?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergii Nechuiviter updated MATH-1234:
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Fix Version/s: 3.5
> Impossible NotStrictlyPositiveException after getStandardDeviation()
> --------------------------------------------------------------------
>
> Key: MATH-1234
> URL: https://issues.apache.org/jira/browse/MATH-1234
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.2
> Environment: Windows 7, Java 1.8
> Reporter: Sergii Nechuiviter
> Fix For: 3.5
>
>
> org.apache.commons.math3.random.EmpiricalDistribution.density() calls
> EmpiricalDistribution.getKernel which calls
> bStats.getStandardDeviation() -- bStats is SummaryStatistics
> and return result caused NotStrictlyPositiveException: standard deviation (0)
> in new NormalDistribution(randomData.getRandomGenerator(),
> bStats.getMean(), bStats.getStandardDeviation(),
> NormalDistribution.DEFAULT_INVERSE_ABSOLUTE_ACCURACY);
> As I understand, it shouldn't be so by contract of SummaryStatistics.
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