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Correlation | 2 |
Error Patterns | 2 |
Error of Measurement | 2 |
Test Reliability | 2 |
True Scores | 2 |
Data Analysis | 1 |
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Measurement | 1 |
Rating Scales | 1 |
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Educational and Psychological… | 2 |
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Williams, Richard H.; Zimmerman, Donald W. – Educational and Psychological Measurement, 1977
The usual formulas for the reliability of differences between two test scores are based on the assumption that the error scores are uncorrelated. Formulas are presented for the general case where this assumption is unnecessary. (Author/JKS)
Descriptors: Correlation, Error of Measurement, Error Patterns, Scores

Werts, C. E.; And Others – Educational and Psychological Measurement, 1976
A procedure is presented for the analysis of rating data with correlated intrajudge and uncorrelated interjudge measurement errors. Correlations between true scores on different rating dimensions, reliabilities for each judge on each dimension and correlations between intrajudge errors can be estimated given a minimum of three raters and two…
Descriptors: Correlation, Data Analysis, Error of Measurement, Error Patterns