Programming the statistical procedures from SAS

compare difference across groups

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Learner
Posts: 1

compare difference across groups

This is my experiment:
Each product were examed by a group of inspectors(identified by inspector ID) and assigned to a grade (1,2,3,4,5) initially. Then these products go to different store and were assigned another grade(1,2,3,4,5) by store manager.

My task is to answer if the grade at first stage by inspector is statistically different from the grade store managers assigned? If different, which inspector has the greatest difference?

I was able to answer the first question but am wondering how to do the second one.

Anyone can help?

Grand Advisor
Posts: 9,463

Re: compare difference across groups

It looks like you are looking for KAPPA of proc freq.

Grand Advisor
Posts: 16,908

Re: compare difference across groups

The topic is known as interrater reliability.

 

Wikipedia has some of the standard methods outlined.

https://en.wikipedia.org/wiki/Inter-rater_reliability

 

There are several papers on lexjansen.com that illustrate ways to analyze this type of data in SAS.

 

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