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Hi Winfried,

On Monday, 2016-07-04 10:36:32 +0200, Winfried Donkers wrote:

I was pointed to a difference in behaviour between Excel and Calc when the data range contains 
non-numeric entries (like #DIV/0!).

Indeed, errors should be propagated.

Excel returns an error with the various VAR and STDEV functions and mentions for these functions 
that errors or arguments that cannot be converted to numbers produce an error.
ODFF1.2 tells me that at least 2 numbers are needed as argument.

Otherwise a standard deviation can't be calculated.

Do I interpret ODFF1.2 correct when I say that for the VAR and STDEV functions all values (single 
arguments and values in ranges) must return true when checking ISNUMBER(value)?

Not quite, the general rules for 6.3.7 "Conversion to NumberSequence"
apply as usul, i.e. text strings within a cell range are ignored, see
https://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part2.html#__RefHeading__1017992_715980110

In that case I shall create a bug report and start fixing ScInterpreter::GetStVarParams(...).

Please do.

Thanks
  Eike

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