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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 32531] New: - [math] ChiSquareTest incorrectly rejects tables containing zeros
Date Sat, 04 Dec 2004 20:13:00 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=32531

           Summary: [math] ChiSquareTest incorrectly rejects tables
                    containing zeros
           Product: Commons
           Version: 1.0 Alpha
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Math
        AssignedTo: commons-dev@jakarta.apache.org
        ReportedBy: phil@steitz.com


The isNonNegative(long[][] in) function defined in
o.a.c.m.inference.ChiSquareTest incorrectly rejects 0 as well as negative
counts. This causes 2-way tables containing 0 counts to be incorrectly rejected
(methods throw IllegalArgumentException).

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