topic Re: chi-square test / compute variable worth in Statistical Procedures

chi-square test / compute variable worth

ed_sas_member — Fri, 15 May 2020 16:42:42 GMT

Dear community,

In the SAS Statistical Business Analysis Using SAS 9 certification guide, the chapter presenting the Chi-Square Tests mentions the opportunity to use the variable worth to order predictor variables by importance:

However, I can't find this calculation in the PROC FREQ output when I use the CHISQ option in the TABLES statement. I have tried to find out if there is another specific option but I haven't found it.

For example, the output for their example is:

proc freq data=cert.ames300;
	tables bonus*High_Kitchen_Quality / chisq;
run;

Do you know if SAS can automatically compute this value? Or do we need to go through a data step by computing something like -2*log10(p_pchi)?

Thank you very much for your help.

Best,

Re: chi-square test / compute variable worth

PaigeMiller — Fri, 15 May 2020 17:05:00 GMT

If you go to https://support.sas.com/en/search.html?q=variable%20worth&fq=releasesystem%3A9.4 and search for variable worth, the only real links you find are for Enterprise Miner.

Re: chi-square test / compute variable worth

ed_sas_member — Fri, 15 May 2020 17:10:44 GMT

Thank you @PaigeMiller !

Re: chi-square test / compute variable worth

StatDave — Tue, 19 May 2020 13:15:10 GMT

Note that a plot of -log(p) is provided by PROC MULTTEST when the PLOTS=MANHATTAN option is specified. See the Getting Started example and try it with that option.

Re: chi-square test / compute variable worth

ed_sas_member — Tue, 19 May 2020 13:19:51 GMT

Thank you @StatDave !