Re: NPAR TESTS

On Friday 26 March 2004 18:46, you wrote:
> On Fri, Mar 26, 2004 at 11:32:05AM -0400, Michael Kiefte wrote:
>      I'm going to have a go at NPAR TESTS unless someone objects.  I
>      probably won't  work on it this weekend though.
>
> I was going to work on this one myself.  But I haven't started
> anything. So please feel free.
>
> Have you thought about how to calculate the Wilcoxon's signed rank
> statistic?  It's O(n2^n) .....

It's the ranks.  You can sort them on disk, but that's only half the battle.  
You've got to go through the cases again and assign the ranks to the actual 
observations.

In the end, the RANK command has to be done first anyway.  After that's done, 
the rest is trivial.

Any ideas on RANK?

Another observation: this is from my manual under the FREQUENCIES comand:
* Maximum 500 variables total per FREQUENCIES command. 
* Maximum of 32,767 observed values over all variables.

No such limitations are listed for RANK.  Is this an omission or can SPSS do 
ranks on disk?

- m.