A Comparative Study of Angoff’s and Nedelsky’s Models to Determine the Cut-off Score for a Criterion-Referenced Test in Mathematics

Abstract

This study aimed at comparing Angoff’s and Nedelsky’s
models to determine the cut-off score for a criterion-referenced test in
mathematics with and without item difficulty indices. The test
consisted of 30 multiple-choice items,with four alternatives for each.
The sample consisted of 80) male and female raters. The raters were
distributed randomly into four equal separate groups. The results of
the study indicated that the cut-off score ranged from 0.62 to 0.68
using Angoff’s model and from 0.49 to 0.57 using Nedelsky’s model.
Furthermore, the differences between the reliability coefficients of
Angoff’s and Nedelsky’s models with or without the raters’ knowledge
of the values of the item difficulty coefficients were not statistically
significant at (α = 0.05).