Table 4 Inter-rater agreement (Phi coefficient) on the rating of PT items within each group of raters
From: Toward a better judgment of item relevance in progress testing
Group | Variable | Variance Components | Phi coefficient for varying numbers of raters | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
V(item) | V(rater) | V(item,rater) | 3 | 4 | 5 | 6 | 7 | 10 | ||
RC | Relevance | 0.068 | 0.005 | 0.073 | 0.72 | 0.78 | 0.81 | 0.84 | 0.86 | 0.90 |
Inclusion | 0.063 | 0.017 | 0.130 | 0.56 | 0.63 | 0.68 | 0.72 | 0.75 | 0.81 | |
STA | Relevance | 0.068 | 0.008 | 0.075 | 0.71 | 0.77 | 0.80 | 0.83 | 0.85 | 0.89 |
Inclusion | 0.077 | 0.009 | 0.114 | 0.65 | 0.71 | 0.76 | 0.79 | 0.81 | 0.86 | |