From: A Rasch-based validation of the Vietnamese version of the Listening Vocabulary Levels Test
PCA contrast | ITEM cluster | Pearson correlation | Disattenuated Pearson correlation |
---|---|---|---|
1 | 1–3 | 0.6105 | 0.7629 |
1 | 1–2 | 0.7404 | 0.8557 |
1 | 2–3 | 0.8679 | 1.0000 |
2 | 1–3 | 0.6901 | 0.7868 |
2 | 1–2 | 0.8607 | 0.9587 |
2 | 2–3 | 0.7915 | 0.9205 |
3 | 1–3 | 0.6241 | 0.7520 |
3 | 1–2 | 0.8252 | 0.9483 |
3 | 2–3 | 0.8239 | 0.9281 |
4 | 1–3 | 0.6883 | 0.8103 |
4 | 1–2 | 0.8411 | 0.9461 |
4 | 2–3 | 0.8450 | 0.9561 |
5 | 1–3 | 0.6924 | 0.8214 |
5 | 1–2 | 0.8127 | 0.9415 |
5 | 2–3 | 0.8754 | 0.9743 |