which correlation coefficients are appropriate for ordered data does spearman's rank correlation coefficient match kendall tau why would a correlation coefficient be used for a linear matrix which correlation coefficient is useful for polychoric what is kendall tau rank correlation coefficient correlation coefficient for polychoric what is the correlation for ordered data what is kendall's tau and spearman's rank correlation coefficients? what is the difference between a polychoric coefficient and a kendall tau rank correlation coefficient why use kendall tau correlation coefficient how do you find correlation coefficients which correlation coefficient is best for ordered data what is the correlation coefficient kendall tau what kind of correlation coefficient does spearman use what is the coefficient of kendall tau which of the following is a correlation coefficient for ordered data? is kendall tau a rank correlation coefficient what is the correlation coefficient for polychoric what is the correlation between kendall tau and spearman rank coefficient? what rank correlation coefficient is polychoric