Programming the statistical procedures from SAS

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

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Contributor
Posts: 73

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

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

SAS Super FREQ
Posts: 3,555

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

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;
Respected Advisor
Posts: 4,756

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

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

PG
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