# Re: st: RE: Ranksum and Makematrix

 From "Herve STOLOWY" To Subject Re: st: RE: Ranksum and Makematrix Date Fri, 01 Apr 2005 21:12:37 +0200

```Dear Nick:

I added "listwise" and the problem is solved.

I sincerely appreciate your help (once more).

Best regards

Hervé

***********************************************************
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HEC Paris
Département Comptabilité Contrôle de gestion / Dept of Accounting and Management Control
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>>> n.j.cox@durham.ac.uk 04/01/05 9:06 PM >>>
As always, please remember for the edification
of others to quote the origin of Stata
commands that are user-written.

-makematrix- is available from SSC.

does appear strange. It may be that you
need to apply the -listwise- option.

With P-values as small as that, you don't
need these results anyway!

Nick
n.j.cox@durham.ac.uk

Herve STOLOWY

> I face the following strange phenomenon concerning the
> -ranksum- test and -makematrix-.
>
> If I use the following command:
>
> makematrix c1, from(r(z) 2*normprob(-abs(r(z)))) : ranksum
> exp_fi , by(interne)
>
> It works and I get the following matrix:
>
> c1[1,2]
>                           z  2*normprob(-abs(z))
> exp_fi            4.9154637            8.857e-07
>
> When I add two variables, my first variable is not disclosed anymore:
>
> makematrix c2, from(r(z) 2*normprob(-abs(r(z)))) : ranksum
> exp_fi fonction_ent fonction_exp, by(interne)
>
> c2[3,2]
>                                 z  2*normprob(-abs(z))
>       exp_fi                    .                    .
> fonction_ent           -5.8967476            3.707e-09
> fonction_exp            5.8967476            3.707e-09
>
> I know that the last two variables are defined on the basis
> of the first one. But is this explanation sufficient to
> understand why the first variable "disappears"? Why couldn't
> I have the first variable also reported, as it is with the
> first command?

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```