topic How to perform a Wilcoxon signed rank test for paired data in Discussions

How to perform a Wilcoxon signed rank test for paired data

Grindel — Fri, 12 Apr 2019 15:43:21 GMT

Hello everyone,

I'm very new to JMP and i'm exploring the possibilities with example found here and there on the net.

One thing i can't get to perform correctly is the Wilcoxon signed rank test.

I'm going through "fit y by x" and selecting one column in y and one in x then non-parametric>Wilcoxon

The results is not the one given in the link nor the one calculated by hand.

It appaears the signed rank test is not the test that JMP is performing.

My suspicion is that it does not recognize paired data

Any help on this subjects would be greatly appreaciated

Have a great day,

Mark_Bailey — Fri, 12 Apr 2019 17:28:22 GMT

First, both variables must be numeric and continuous. (The Before variable is currently nominal.)

Second, select Analyze > Specialized Modeling > Matched Pairs. Be sure to enter the Before variable in the Y role, then the After variable.

See how that approach works.

Mark_Bailey — Fri, 12 Apr 2019 17:30:49 GMT

It should look like this when you get it correctly:

Grindel — Sat, 13 Apr 2019 14:05:20 GMT

Hello Mark,

Thank you for this quick and spot-on answer.

It seems so easy now that it's explained

With any luck it will help someone else in the future

Have a great day :)