Proc survey select

[avatar]

I have a dataset (226841 records) having 2 columns(Claim_num and ACCT). there are about 235 ACCT having claims ranging 1 to 24,648)

I would like to get optimal sample size from this set to audit.

proc surveyselect data=cag_out n=100

       out=Sample_all_out;     

      strata cag / ALLOC=PROP nosample;     

   run;

I getting error

ERROR: Variable PROP not found.

ERROR: Variable NOSAMPLE not found.

ERROR 22-322: Syntax error, expecting one of the following: a name, ;, -, :, DESCENDING, NOTSORTED, _ALL_, _CHARACTER_, _CHAR_,

              _NUMERIC_. 

ERROR 202-322: The option or parameter is not recognized and will be ignored.

any help is appreciated

Thanks

[PGStats]

ALLOC=PROP appeared in SAS 9.2 Which version of SAS are you using?

PG

[avatar]

we are using 9.1. any other suggestion?

[ballardw]

How do you define optimal in this sense?

[avatar]

I am interested in a procedure which gives sample size recommendation based on population size. is POWER procedure the one to consider?

[Doc_Duke]

All of the common statistical power/sample size procedures assume an infinite underlying (theoretical) population.  Working with fixed populations complicates the estimation.  Your 'population' is large enough to be functionally infinite.  However, you still need to optimize on something else.

Change your question to something that power works for.  Most likely, that would be to get a sufficient precision (s.d.) on an estimator of interest (cost?).

[avatar]

Thank you very much for all your suggestions. We will be looking into Power procedure