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[Octave-bug-tracker] [bug #36718] moment, skewness, and kurtosis differe


From: Rik
Subject: [Octave-bug-tracker] [bug #36718] moment, skewness, and kurtosis differences with Matlab
Date: Fri, 29 Jun 2012 18:13:30 +0000
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:13.0) Gecko/20100101 Firefox/13.0.1

Update of bug #36718 (project octave):

                  Status:                    None => Need Info              
                 Summary: moment, skewness and kurtosis => moment, skewness,
and kurtosis differences with Matlab

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Follow-up Comment #1:

I swear I updated this a few years ago.  Maybe Matlab has been slowly changing
their defaults.

On reading the documentation I see that skewness and kurtosis have a flag
which decides whether bias correction is applied.  Rather than just changing
Octave to use the current default, it would be better to add support for the
bias flag and then set the flag to the default value used by Matlab.

Could you run the following tests to see how Matlab is applying bias
correction?


x = [1:5].^2;
skewness (x, 0)
kurtosis (x, 0)



    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?36718>

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