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PSPP-BUG: [bug #61298] No estimation of percentiles with closely tied da


From: anonymous
Subject: PSPP-BUG: [bug #61298] No estimation of percentiles with closely tied data
Date: Wed, 6 Oct 2021 09:02:30 -0400 (EDT)
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.2 Safari/605.1.15

URL:
  <https://savannah.gnu.org/bugs/?61298>

                 Summary: No estimation of percentiles with closely tied data
                 Project: PSPP
            Submitted by: None
            Submitted on: Wed 06 Oct 2021 01:02:28 PM UTC
                Category: Numerical Errors
                Severity: 5 - Average
                  Status: None
             Assigned to: None
             Open/Closed: Open
                 Release: None
         Discussion Lock: Any
                  Effort: 0.00

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Details:

PSPP for Mac : Problems with computation of percentiles (frequencies
statement) when there exist close ties between observations. PSPP shows either
asterisks or percentages instead of estimated data values. Variables with more
dispersion between data look OK. Former version of PSPP for Mac did calculate
percentiles correctly in spite of close ties. Have executed the exact same
statement on the exact same dataset. The Mac runs High Sierra 10.13.6.
I attach screen dumps from today's run and a run four years ago, both in jpeg
format.



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File Attachments:


-------------------------------------------------------
Date: Wed 06 Oct 2021 01:02:28 PM UTC  Name: 2021PSPP_Percentiles.jpeg  Size:
559KiB   By: None

<http://savannah.gnu.org/bugs/download.php?file_id=52052>
-------------------------------------------------------
Date: Wed 06 Oct 2021 01:02:28 PM UTC  Name: 2017PSPP_Percentile.jpeg  Size:
309KiB   By: None

<http://savannah.gnu.org/bugs/download.php?file_id=52053>

    _______________________________________________________

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  <https://savannah.gnu.org/bugs/?61298>

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