The 60-item grammar post-test showed KR-21 reliability of 0.94 and a moderate criterion-related validity correlation of 0.41 with the Nelson grammar total¶

Claim · All claims
Evidence · 1 study · causal r1 · q2
Currency · newest study 2011 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2014: tool and model accuracy changes quickly

Subclaims¶

q2 i? The post-test's reliability was estimated at 0.94 by KR-21 and its validity by a Pearson correlation of 0.41 with official Nelson grammar scores. → Minoo Alemi & Apama Miraghaee 2011

Evidence¶

Minoo Alemi & Apama Miraghaee 2011¶

Minoo Alemi & Apama Miraghaee. (2011). A Comparative Study of Testing Grammar Knowledge of Iranian Students between Cloze and Multiple-Choice Tests. i-manager's Journal of English Language Teaching, Vol. 1, No. 3, July - September 2011. https://eric.ed.gov/?id=EJ1071285

q2 · i? · causal · r1

Pilot study and correlational procedures checked the post-test: KR-21 reliability of 0.94 (Table 2) and Pearson criterion-related correlation with the Nelson total. The article reports the 0.41 coefficient as "a moderate relationship".

"A coefficient of correlation of 0.41 indicated that there was a moderate relationship between the set of post test scores and the official NELSON total scores of grammar."

Discussion¶

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