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Table 5 Effect of each facet on total score variance (pre-training)

From: Investigating the effect of classroom-based feedback on speaking assessment: a multifaceted Rasch analysis

No.

Facets identified in the study

Percentage effect on total score variance

1

Test taker ability

44.82

2

Rater severity

26.13

3

Group expertise

14.67

4

Test version

6.58

5

Task difficulty

4.74

6

Scale categories

3.06

  

100