What is a point-biserial correlation?

- Defined:	Point-biserial correlation is a correlation when one of the variables is dichotomous
- Variables:	Variable1 is continuous, Variable2 is dichotomous
- Relationship:	Relationship amongst variables
- Example	Relationship between height and gender
- Assumptions:	Normality.

What is a point-biserial correlation?

Point-biseral Correlations are conducted when one of the variables is dichotomous. A dichotomous variable is when the categorical variable has only two categories, such as gender: male, female.
The Point-biserial Correlation is analogous to a "t-test", which is the statistical test conducted when you are interested in the relationship between a categorical independent variable (such as gender: male, female) and a continuous dependent variable (such as belief in the death penalty on 1-7 scale).

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