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ARPN Journal of Science and Technology >> Volume 7, Issue 2, November 2017

ARPN Journal of Science and Technology

Computer Software Application in Item Analysis of Exams in a College of Medicine

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Author Mohammad Resa Sharif, Seyed Mohsen Rahimi, Mehdi Rajabi, Mansour Sayyah
ISSN 2225-7217
On Pages 565-569
Volume No. 4
Issue No. 10
Issue Date November 01, 2014
Publishing Date November 01, 2014
Keywords Item Analysis, Difficulty index, Discrimination index, Cronbach alpha, Multiple choice exams, Software


MCQ exams need to be item analyzed to assess students. Computer software is used to perform this task reliably. This cross sectional study was performed on 40 MCQ exams including 2445 multiple choice question items using a software. The difficult and discrimination index in addition to Cronbach's alpha was calculated for every question and exam by LERTAP 5.0 software from ASC-USA. In addition, mean value for each index for the tests was calculated by SPSS:Pc16.0. The result of statistical analysis revealed that the mean of item difficulty and discrimination index of the exams used at the college of medicine were 0.49 and 0.19, respectively. In addition, the mean of coefficient alpha for the entire tests was 0.74. Only in 12 percent of the questions all the distracters were distracting. The mean of difficulty and discrimination index of MCQ exams of college of medicine was 0.68 and 0.19. These values were close to the recommended values suggested by experts in the field, however a considerable frequency of these indexes by some tests were low. Further research is needed to construct better tests.

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