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An IERI – International Educational Research Institute Journal

Table 2 Number of items according to the fit of the two-class FMM to the item RT data, by cluster position

From: Student test-taking effort in low-stakes assessments: evidence from the English version of the PISA 2015 science test

Cluster position

Two-class FMM fits well

Number of items

1

No

4

Yes

179 (97.81%)

2

No

5

Yes

178 (97.27%)

3

No

5

Yes

178 (97.27%)

4

No

4

Yes

179 (97.81%)