[Octave-bug-tracker] [bug #48077] CI not correct in ttest

[Andreas Stahel]

URL:
  <http://savannah.gnu.org/bugs/?48077>

                 Summary: CI not correct in ttest
                 Project: GNU Octave
            Submitted by: sha1
            Submitted on: Wed 01 Jun 2016 04:19:02 PM CEST
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Tony Richardson
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.2
        Operating System: Any

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Details:

The computed CI is not quite correct

data = [8:0.1:12];
[h,pval,ci] = ttest(data,10)  % confidence interval is off
[h,pval,ci] = ttest(data,0)


the code line  'x = x- my' does the damage

With many thanks for the codes

Andreas




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