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VOL. 9, ISSUE 2 (2024)
Estimating the effects of the instrumentation facets and their interractions on score dependability in examinations using generalizability theory
Authors
Chukwuemeka B Ikeanumba, Nkechi P M Esomonu
Abstract
This study estimated the effects of instrumentation facets and their
interactions on score dependability in examinations, using the Generalizability
Theory. With students’ low performance in economics examinations. It is needful
to estimate the effects of the instrumentation facets and their interaction on
score dependability using generalizability theory. Two research questions and
one hypothesis were posed to guide the study. The population of the study
comprised 6,799 Senior Secondary Three (SS3) students from the 137 public
secondary schools in the Okigwe Education Zone for the 2023/2024 academic
session. The sample for this study comprised 680 students representing 10% of
the total number of SS3 students and 68 schools representing 50% of the total
population of schools in the zone. Paper 2 sections A and B of the 2020 WAEC Economics
essay paper and 2020 WAEC Economics Marking Guide were adopted for this study.
The instruments were already validated and standardized by WAEC. Data collected
and analyzed for research questions using the software EduG version 6.0-e based
on analysis of variance (ANOVA) and generalizability. Hypothesis was tested
using 95% confidence interval using standard error of measurement (SEM) and the
variance components at 0.05 level of significance. The findings of the study
revealed among others that The dependability study showed that SSCE in
economics for 2020 will be optimized using 9 raters to 13 items. Based on the
findings, it was recommended among others that, Generalizability analysis
should be carried out by test developers, psychometricians, policymakers in
assessment in the estimation of reliability to identify multiple sources of
error and to reduce or eliminate measurement error, hence maximize reliability
of candidates’ scores.
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Pages:12-15
How to cite this article:
Chukwuemeka B Ikeanumba, Nkechi P M Esomonu "Estimating the effects of the instrumentation facets and their interractions on score dependability in examinations using generalizability theory". International Journal of Advanced Education and Research, Vol 9, Issue 2, 2024, Pages 12-15
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