what is the point biserial correlation used for? what is point biserial correlation what is a point biserial correlation what is the point biserial correlation for when is the relationship of the point biserial correlation for non normally distributed data? which model can be used to test the point biserial correlation what is point biserial correlation why use biserial correlation when to use point biserial correlation what is point biserial what is a point biserial correlation when is the point biserial correlation used when to use point biserial correlation what is meant by null correlation in statistics which correlation for non normally distributed data can a non normally distributed sample size be used as a point-biserial correlation? how does point biserial correlation work? what is the p-biserial correlation what is normal distribution for data what is the value of point biserial correlation