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ERIC Number: ED573086
Record Type: Non-Journal
Publication Date: 2013
Pages: 14
Abstractor: As Provided
Reference Count: 33
ISBN: N/A
ISSN: ISSN-2155-7535
Alternative Estimates of the Reliability of College Grade Point Averages. Professional File. Article 130, Spring 2013
Saupe, Joe L.; Eimers, Mardy T.
Association for Institutional Research
The purpose of this paper is to explore differences in the reliabilities of cumulative college grade point averages (GPAs), estimated for unweighted and weighted, one-semester, 1-year, 2-year, and 4-year GPAs. Using cumulative GPAs for a freshman class at a major university, we estimate internal consistency (coefficient alpha) reliabilities for the several GPAs. We compare these reliabilities to similar reliabilities found in the literature. Principal findings are that different cumulative GPAs have different degrees of reliability and that GPA reliability increases at a decreasing rate with number of semesters completed. Understanding these differences in reliability has implications for how GPAs are used by institutional researchers in practical as well as theoretical studies. The literature review and methods of the study should be useful to the institutional researcher who undertakes an investigation that involves GPA reliability. [For article 129 in the Spring 2013 issue of Professional Files, "A Comparison Study of Return Ratio-Based Academic Enrollment Forecasting Models. Professional File. Article 129, Spring 2013." ED573085. For article 131 in the Spring 2013 issue of Professional Files, "Programs for Engagement and Enhancement. Professional File. Article 131, Spring 2013," see ED573087.]
Association for Institutional Research. 1435 East Piedmont Drive Suite 211, Tallahassee, FL 32308. Tel: 850-385-4155; Fax: 850-383-5180; e-mail: air@airweb.org; Web site: http://www.airweb.org
Publication Type: Collected Works - Serial; Reports - Research
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: Association for Institutional Research (AIR)