Bayesian Estimation of Above-Average Performance in Tertiary Institutions: A Case Study of University of Lagos, Akoka, Nigeria.
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Date
2013
Authors
Ogundeji, Rotimi
Lawal, Ganiyu
Arowolo, Olatunji
Journal Title
Journal ISSN
Volume Title
Publisher
International Organization of Scientific Research, IOSR Journals.
Abstract
Bayesian approach for parameter estimation has the capacity to yield more precise estimates than
methods based on sampling theory. There are several common Bayesian models; in this study we applied
Empirical Bayes (EB) model called Beta-binomial model. The study is motivated by the need to beam
searchlight on universities, faculties or fields of study with graduates who may not be eligible for further
educational pursuits. This study provides means of assessment or a basis of evaluation of students’
performances among faculties or fields of study and overall performance of a university. This study uses
Bayesian methods of inference to estimate the proportion of above-average performance of graduates from the
various faculties in University of Lagos. The model adopted generated results which are of smaller variances
compared with variances of sample Proportions, showing that the posterior proportions generated are more
efficient estimators. This is further evidenced in narrow widths of the computed confidence intervals. The
overall result shows that the proportion of above-average performance of graduates of University of Lagos, who
are eligible for further educational pursuits (i.e. higher degrees), is approximately 72% of the university
graduates.
Description
Keywords
Empirical Bayes Models , Beta-Binomial Model , Cumulative Grade Point Average , Posterior Proportion , Sample Proportion , University of Lagos-Nigeria
Citation
Ogundeji, R., Lawal, G., & Arowolo, O. Bayesian Estimation of Above-Average Performance in Tertiary Institutions: A Case Study of University of Lagos, Akoka, Nigeria.