Sergii Nechuiviter created MATH-1234:
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Summary: 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
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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