Point-biserial correlation: Interval estimation, hypothesis testing, meta-analysis, and sample size determination.

@article{Bonett2019PointbiserialCI,
  title={Point-biserial correlation: Interval estimation, hypothesis testing, meta-analysis, and sample size determination.},
  author={Douglas G. Bonett},
  journal={The British journal of mathematical and statistical psychology},
  year={2019}
}
  • D. Bonett
  • Published 30 September 2019
  • Mathematics
  • The British journal of mathematical and statistical psychology
The point-biserial correlation is a commonly used measure of effect size in two-group designs. New estimators of point-biserial correlation are derived from different forms of a standardized mean difference. Point-biserial correlations are defined for designs with either fixed or random group sample sizes and can accommodate unequal variances. Confidence intervals and standard errors for the point-biserial correlation estimators are derived from the sampling distributions for pooled-variance… 

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