NotesFAQContact Us
Search Tips
Peer reviewed Peer reviewed
PDF on ERIC Download full text
ERIC Number: EJ803060
Record Type: Journal
Publication Date: 2008
Pages: 5
Abstractor: As Provided
Reference Count: 7
ISSN: ISSN-1842-4562
Validity, Reliability and Difficulty Indices for Instructor-Built Exam Questions
Jandaghi, Gholamreza; Shaterian, Fatemeh
Journal of Applied Quantitative Methods, v3 n2 p151-155 Sum 2008
The purpose of the research is to determine college Instructor's skill rate in designing exam questions in chemistry subject. The statistical population was all of chemistry exam sheets for two semesters in one academic year from which a sample of 364 exam sheets was drawn using multistage cluster sampling. Two experts assessed the sheets and by using appropriate indices and z-test and chi-squared test the analysis of the data was done. We found that the designed exams have suitable coefficients of validity and reliability. The level of difficulty of exams was high. No significant relationship was found between male and female instructors in terms of the coefficient of validity and reliability but a significant difference between the difficulty level in male and female instructors was found (P less than 0.001). It means that female instructors had designed more difficult questions. We did not find any significant relationship between the instructors' gender and the coefficient of discrimination of the exams. (Contains 3 tables.)
Association for Development through Science and Education. Str. Anastasie Panu 6, BI B5, scara 1, ap 22, etaj 5, sector 3, Bucharest 031164, Romania. Fax: +40-213220544; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Iran