[Pspp-commits] [SCM] GNU PSPP branch, pre0.6.2, updated. v0.6.1-48-gc649f7f

[Ben Pfaff]

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The branch, pre0.6.2 has been updated
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      from  324b25ac025d75a164ba4506175be6d265681108 (commit)

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- Log -----------------------------------------------------------------
commit c649f7f5c4f5b74d48efa3453c38c1458e7ae9a9
Author: Ben Pfaff <address@hidden>
Date:   Thu Sep 3 20:09:36 2009 -0700

    T-TEST: Avoid NaN in paired-sample correlation significance calcuation.
    
    Sometimes the correlation comes out just above 1.0 due to inaccuracy of
    machine calculation, which causes sqrt(1-corr**2) to yield NaN.  This
    commit forces the correlation into the valid range, fixing the problem.
    
    Thanks to Matej Cepl <address@hidden> for reporting the problem.
    Thanks to John Darrington for suggesting the fix.

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Summary of changes:
 src/language/stats/t-test.q |   11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)


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