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Correlation matrix for mean perceptual rating of overall voice quality performed by three independent raters. Correlation coefficients (Pearson's r) are shown for each rater pair and each individual rater against the group mean.
| Rater | 1 | 2 | 3 | Group mean |
|---|---|---|---|---|
| 1 | 1.00 | - | - | - |
| 2 | .92 | 1.00 | - | - |
| 3 | .84 | .85 | 1.00 | - |
| Group mean | .97 | .97 | .94 | 1.00 |
