Date:         Thu, 12 Mar 2009 19:07:40 -0400
Reply-To:     Sigurd Hermansen <HERMANS1@WESTAT.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Sigurd Hermansen <HERMANS1@WESTAT.COM>
Subject:      Re: Invalid Argument to PROBIT Problem
Comments: To: "tonypit45@yahoo.ca" <tonypit45@yahoo.ca>
In-Reply-To:  <509398.10966.qm@web57002.mail.re3.yahoo.com>
Content-Type: text/plain; charset="iso-8859-1"

Does the error message indicate a run-time error that stops program execution, or an error in the range of one or more of the observations in the datasets? A missing value may trigger an error message one observation at a time. Conditional execution of the probit function assignment could take care of that type of problem. An argument that has all values out of range has to have different treatment. Why not show the actual error message?
S

-----Original Message-----
From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] On Behalf Of Anthony Pitruzzello
Sent: Thursday, March 12, 2009 5:35 PM
To: SAS-L@LISTSERV.UGA.EDU
Subject: Invalid Argument to PROBIT Problem


Greetings
All,



This code
converts percentile ranks to normal curve equivalents.  See output.



* Test Program to create NCEs from XILs;

%let prefx = SAT10_;

%let suffx = 8;

data cards;

input pr;

&prefx.nce&suffx = round(probit(pr/100)*21.06+50,.1);

cards;

1

2

3

4

5

6

7

run;

proc print; run;



produces this output:

             SAT10_

Obs    pr
nce8

1      1
1.0

2      2
6.7

3      3
10.4

4      4
13.1

5      5
15.4

6      6
17.3

7      7
18.9





This is essentially the same code,
applied in a program:



data temp.FC8; merge exp8 exp9
temp.FC7(in=x);

by sid; if x;



*** Exp_mathpr8 is a percentile, properly defined

    as a numeric;

nce = round(probit(Exp_mathpr8/100)*21.06+50,.1);

run;



This produces the message: Invalid
argument to function PROBIT.  Can anyone
figure why the argument in the first instance is valid and in the second instance is not?




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