Cohen S Kappa Spss. In research designs where you have two or more raters also known as judges or observers who are responsible for measuring a variable on a categorical scale it is important to determine whether such raters agree. Fleiss kappa in spss statistics introduction.
It is an appropriate index of agreement when ratings are nominal scales with no order structure.
In 1997 david nichols at spss wrote syntax for kappa which included the standard error z value and p sig value. Fleiss kappa κ fleiss 1971. Cohen s kappa κ is such a measure of inter rater agreement for categorical scales when there are two raters where κ is the lower case greek letter kappa. In this example the value for cohen s kappa is 0 595.
