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Statistical Methodology

Todd Christopher Headrick

Intraclass Correlation Coefficient

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Full-Text Articles in Physical Sciences and Mathematics

A Method For Simulating Multivariate Non-Normal Distributions With Specified Standarized Cumulants And Intraclass Correlation Coefficients, Todd C. Headrick, Bruno D. Zumbo Jan 2008

A Method For Simulating Multivariate Non-Normal Distributions With Specified Standarized Cumulants And Intraclass Correlation Coefficients, Todd C. Headrick, Bruno D. Zumbo

Todd Christopher Headrick

Intraclass correlation coefficients (ICCs) are commonly used indices in subject areas such as biometrics, longitudinal data analysis, measurement theory, quality control, and survey research. The properties of the ICCs most often used are derived under the assumption of normality. However, real-world data often violate the normality assumption. In view of this, a computationally efficient procedure is developed for simulating multivariate non normal continuous distributions with specified (a) standardized cumulants, (b) Pearson intercorrelations, and (c) ICCs. The linear model specified is a two-factor design with either fixed or random effects. A numerical example is worked and the results of a Monte …