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Bug 700294 - statfuns -- increase accuracy requirement
statfuns -- increase accuracy requirement
Status: RESOLVED FIXED
Product: Gnumeric
Classification: Applications
Component: Analytics
git master
Other All
: Normal normal
: ---
Assigned To: Morten Welinder
Jody Goldberg
Depends on:
Blocks:
 
 
Reported: 2013-05-14 13:08 UTC by Morten Welinder
Modified: 2013-05-15 13:52 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Morten Welinder 2013-05-14 13:08:28 UTC 
We should increase the accuracy requirement in statfuns.xls to something
stronger -- maybe 10 correct digits.

Just changing it causes us to fail various cdf inverse-cdf tests because
the reference values we have are from Excel cirka 1997.  Current Excel
fails those too.

We need reference values from a trusted third party.
Comment 1 Morten Welinder 2013-05-15 13:52:41 UTC 
We agree with Excels values up to at least 1e-13 relative error.  Given the
other tests we have for the stats functions -- Yalta and Burkardt, for
example, that's good enough to trust these values.