Ethan Mahintorabi created MATH-1502:
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Summary: KolmogorovSmirnovTest#exactP value is incorrect in 3.6.1
potential bug
Key: MATH-1502
URL: https://issues.apache.org/jira/browse/MATH-1502
Project: Commons Math
Issue Type: Bug
Affects Versions: 3.6.1
Reporter: Ethan Mahintorabi
I believe that I have found a bug in the calculation of the exactP value in
KolmogorovSmirnovTest.java in version 3.6.1.
In version 3.4.1 KolmogorovSmirnovTest#exactP(0.5633587786259542, 3, 3, true) =
0.6
Where as
In version 3.6.1 KolmogorovSmirnovTest#exactP(0.5633587786259542, 3, 3, true) =
0.09999999999999998
The approximateP value has stayed the same at ~=0.72. This seems to correspond
with the change in methods of calculation in
e38bbb9f4191d0d21dea0ba31fdc131b97a5597b
[https://github.com/apache/commons-math/commit/e38bbb9f4191d0d21dea0ba31fdc131b97a5597b#diff-34100572fcc8e6537bc7445a0e82b900]
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