topic Re: Test for normality-PROC UNIVARIATE-where is Shapiro wilks? in Statistical Procedures

Test for normality-PROC UNIVARIATE-where is Shapiro wilks?

bollibompa — Mon, 14 Sep 2015 12:32:53 GMT

Hi,

I use to check normality using proc univariate where the output gives 4 different test for normality.

Now, something has happened with my output and I dont see any Shapiro Wilks test in the output.

Anyone know the reason for this? Have I done something to turn off Shapiro?

Thanks

Thomas

Rick_SAS — Mon, 14 Sep 2015 14:14:42 GMT

We have no way of knowing unless you include your SAS program, but the following example produces the statistic:

proc univariate data=sashelp.iris normal;
var SepalWidth;
run;

PGStats — Mon, 14 Sep 2015 16:16:42 GMT

The doc says that the S-W statistic is computed only when the sample size is less than 2000.