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*Subject*: **Re: [office-formula] MIRR**

*From*:**"Andreas J. Guelzow" <aguelzow@pyrshep.ca>***To*: office-formula@lists.oasis-open.org*Date*: Wed, 23 Dec 2009 19:45:59 -0700

On Wed, 2009-12-23 at 19:40 -0500, Patrick Durusau wrote: > Andreas, > > Andreas J. Guelzow wrote: > > I'll pick this one but the same applies to most other comments of this > > type: > > > > On Wed, 2009-12-23 at 11:07 -0500, Patrick Durusau wrote: > > > >> MIRR lacks parameters, at least as we define them for other functions. > >> > >> > > > > In my copy, parameters are specified: > > MIRR( Array Values ; Number Investment ; Number ReinvestRate ) > > > > Stating that "Values" are a bunch of values, "Investment" is the > > investment rate and blablabla doesn't mean anything and doesn't define > > anything either. > > > > This function is defined by given a specific formula (with the little > > problem that the lower case n and upper case N should be the same). I > > would hope that all function definitions/descriptions would look like > > the current 5.12.28 MIRR. > > > > > Well, but my point was that rather than having the listing of parameters > that you object to, MIRR instead has: > > > Values is a series of periodic income (positive values) and payments > > (negative values) at regular intervals (text and empty cells are > > ignored). Investment is the rate of interest of the payments (negative > > values); ReinvestRate is the rate of interest of the reinvestment > > (positive values). > > > It just reports them in a paragraph of prose. > > Personally I don't find than any more useful than listing them in the > other style. I would prefer to delete those paragraphs to. Unfortunately they also appear elsewhere, for example: "COMBIN returns the binomial coefficient, which is the number of different R-length sets that can be selected from N items. Since they are sets, order in the sets is not relevant. The parameters are truncated (using INT) before use. For example, if a jar contains five marbles, each one a distinct color, the number of different three-marble groups COMBIN(5;3) = 10. The result is (formula omitted) Note that if order is important, use PERMUT instead." I find that completely pointless. The formula alone should suffice. (Note that COMBIN calculates lots of other things too.) Andreas -- Andreas J. Guelzow <aguelzow@pyrshep.ca>

**Follow-Ups**:**Style for Function Descriptions***From:*"Dennis E. Hamilton" <dennis.hamilton@acm.org>

**References**:**MIRR***From:*Patrick Durusau <patrick@durusau.net>

**Re: [office-formula] MIRR***From:*"Andreas J. Guelzow" <aguelzow@pyrshep.ca>

**Re: [office-formula] MIRR***From:*Patrick Durusau <patrick@durusau.net>

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