Transcription of Test reliability and validity - pbarrett.net
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Test reliability and validityThe inappropriate use of the Pearson and other variance ratio coefficients for indexing reliability and validity Revised 15th July, 2010 2of 34 Technical Whitepaper #9: Pearson correlation, Test reliability and validity Revision #1 15th July,2010 Executive Summary 1. For test retest reliability and validity estimation, psychologists generally use Pearson correlations to express the magnitude of relationships between attributes. For rater reliability where ratings are usually acquired using Likert ordered class as numbered magnitudes scales, they generally use intraclass (ICC) coefficients and rwg statistics.
Test reliability and validity The inappropriate use of the Pearson and other variance ratio coefficients for indexing reliability and validity
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