Rater reliability calculation

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lauramar
Posts: 15
Joined: Wed Oct 27, 2021 11:11 am

Rater reliability calculation

Post by lauramar »

Hi, I would like to calculate rater reliability which is available in the Seolmatrix module. I have a set of 6 people and their performances are rated by 50 raters. The ratings can be between 1 and 6 but often the raters use a more restricted range when they give ratings (for example, they score the six performances either 3, 4, 5 or 6 and do not use the lower scores at all).
When I add all the raters for the analysis, I get an error message 'S' is not a positive definite. I would greatly appreciate help in understanding why this is happening.
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