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50 Years of ERIC
50 Years of ERIC
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Peer reviewed Peer reviewed
ERIC Number: EJ231190
Record Type: CIJE
Publication Date: 1980
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
Equal Cell Size and Nonorthogonality in ANCOVA.
Llabre, Maria M.; Ware, William B.
Educational and Psychological Measurement, v40 n1 p91-94 Spr 1980
Computer programs for analysis of covariance use classical experimental, regression, or hierarchical methods of least squares. In a 3 X 3 factorial experiment with equal cell frequencies, three solutions yielded different sums of squares for main effects although correlation between variables was negligible and cell frequencies were equal. (Author/BW)
Descriptors: Analysis of Covariance, Computer Programs, Least Squares Statistics, Multiple Regression Analysis
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Cell Frequencies; Statistical Package for the Social Sciences