This study was aimed at estimating the score reliability of Economics essay test using Generalizability Theory, basically to: (a) estimate potential sources of error due to students (persons), items (tasks) and raters (judges) and (b) to obtain reliability estimates of the measurement instrument by increasing the levels of conditions in each facet. Variance due tostudent by item by rater interaction was the highest contribution of error variance followed by students' factor.It was also gathered from the analyses of the findings that it would be more efficient to increase the number of items rather than increasing the number of raters in order to maximize the score reliability of Economics essay test.Conclusions drawn from this study were analysis of scores from ratings of students in Economics essay test.
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Francis Elochukwu Ikeh et al. Francis Elochukwu Ikeh et al. (2021) studied this question.
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