Question
I'm having trouble understanding the difference between a biserial correlation coefficient and a tetrachoric correlation coefficient.
Could someone please provide an example of each to help me understand the difference?
Thanks!!
Could someone please provide an example of each to help me understand the difference?
Thanks!!
Answers
PsyDAG
From Google:
Biserial and Polychoric. You know that the point biserial correlation coefficient is used to measure the association between a dichotomous variable and a continuous variable. ... When both variables are dichotomous the polychoric correlation coefficient may be called the tetrachoric correlation coefficient.
Biserial and Polychoric. You know that the point biserial correlation coefficient is used to measure the association between a dichotomous variable and a continuous variable. ... When both variables are dichotomous the polychoric correlation coefficient may be called the tetrachoric correlation coefficient.