![Ado Abdu Bichi, PhD](https://cdn.statically.io/img/0.academia-photos.com/8021538/3724801/4364023/s200_ado.abdu_bichi.jpg)
Ado Abdu Bichi, PhD
Dr. Ado Abdu Bichi is a Lecturer in Measurements and Evaluation & lead Consultant of the Future-Care Educational Consultants. Specialised in Research, Statistics & Applied Measurement
Phone: +2348032928301
Address: Faculty of Education, Northwest University, Kano-Nigeria
Phone: +2348032928301
Address: Faculty of Education, Northwest University, Kano-Nigeria
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Methods: To demonstrate the application of OSS, 9 judges were employed for the conduct of standard ratings; the data used for Rasch calibration with WINSTEP were the responses of 600 students on the 60 items validated Economics Placement Test (EPT).
Findings: The experts’ ratings and Rasch generated logits (item difficulties) were used in quantifying the set of essential items selected. Results of OSS produced the cut-scores of <-0.62 into Basic, -0.62 logits into Proficient and 0.02 logits for Advanced performance levels. The examinees in these categories were, 39% at Basic, 32% at Proficient and 29% at Advanced performance levels.
Implications for Research and Practice: The results of this OSS provide performance levels with a clear content related description to informed decision on students’ mastery of the content in EPT. It is recommended that, results from the OSS should be compared with other existing IRT-based methods in similar study to ascertain its external validity.
Methods: To demonstrate the application of OSS, 9 judges were employed for the conduct of standard ratings; the data used for Rasch calibration with WINSTEP were the responses of 600 students on the 60 items validated Economics Placement Test (EPT).
Findings: The experts’ ratings and Rasch generated logits (item difficulties) were used in quantifying the set of essential items selected. Results of OSS produced the cut-scores of <-0.62 into Basic, -0.62 logits into Proficient and 0.02 logits for Advanced performance levels. The examinees in these categories were, 39% at Basic, 32% at Proficient and 29% at Advanced performance levels.
Implications for Research and Practice: The results of this OSS provide performance levels with a clear content related description to informed decision on students’ mastery of the content in EPT. It is recommended that, results from the OSS should be compared with other existing IRT-based methods in similar study to ascertain its external validity.