NotesFAQContact Us
Collection
Advanced
Search Tips
50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

Back to results
Peer reviewed Peer reviewed
ERIC Number: EJ375708
Record Type: CIJE
Publication Date: 1988
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
Group Matching: Is This a Research Technique to Be Avoided?
Ross, Donald C.; Klein, Donald F.
Educational and Psychological Measurement, v48 n2 p281-95 Sum 1988
The variance of the sample difference and the power of the "F" test for mean differences were studied under group matching on covariates and also under random assignment. Results shed light on systematic assignment procedures advocated to provide more precise estimates of treatment effects than simple random assignment. (TJH)
Descriptors: Analysis of Covariance, Analysis of Variance, Monte Carlo Methods, Outcomes of Treatment, Research Methodology, Sampling
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Anova F Test; Group Matching; Random Assignment