Fundamental Concepts - Other Bivariate Correlations

4 important questions on Fundamental Concepts - Other Bivariate Correlations

What is point-biseral correlation? (rpb)

The correlation between a dichotomous and a continous variable (e.g. gender - weight)


What is spearmans rank order correlation?

The correlation between two ranked variables.


What is the polyserial correlation?

The correlation between a continous variable and  a categorical variable with three or more levels seen from the perspective that the variables are countinous and normally distributed.
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What is the tetrachoric correlation?

The correlation between two dichotomous variables estimates seen fromt he pserpective that the variables are continuous and normally distributed.

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