scholarly journals Accurate distribution and its asymptotic expansion for the tetrachoric correlation coefficient

2010 ◽  
Vol 101 (4) ◽  
pp. 936-948 ◽  
Author(s):  
Haruhiko Ogasawara
2003 ◽  
Vol 63 (6) ◽  
pp. 931-950 ◽  
Author(s):  
Tammy Greer ◽  
William P. Dunlap ◽  
Gregory O. Beatty

1980 ◽  
Vol 17 (3) ◽  
pp. 391-394 ◽  
Author(s):  
Ulf Olsson

The product moment correlation coefficient is often used even for ordinal data with only a few scale steps. This procedure may lead to biased results, where the bias depends on the number of scale steps and on the skewnesses of the observed variables. The polychoric correlation coefficient, which is a generalization of the tetrachoric correlation to the general case, is discussed as a possible measure of correlation for this kind of data.


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