Hypothesis test
点双列相关
点双列相关系数 (r_pb) 衡量一个自然二分变量（编码为 0/1）与一个连续变量之间线性关联的强度和方向。它是皮尔逊积矩相关系数的一个特例，由 Tate (1954) 在《数理统计年鉴》上正式推导，是心理测量项目分析、效度研究以及任何二元分组变量与连续结果相关的研究背景中使用的标准指标。
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来源
- Tate, R. F. (1954). Correlation between a discrete and a continuous variable. Point-biserial correlation. Annals of Mathematical Statistics, 25(3), 603–607. DOI: 10.1214/aoms/1177728730 ↗
- Tate, R. F. (1955). The theory of correlation between two continuous variables when one is dichotomized. Biometrika, 42(1–2), 205–216. DOI: 10.1093/biomet/42.1-2.205 ↗
- Nunnally, J. C., & Bernstein, I. H. (1994). Psychometric Theory (3rd ed.). McGraw-Hill. ISBN: 978-0070478497
如何引用本页
ScholarGate. (2026, June 3). Point-Biserial Correlation Coefficient. ScholarGate. https://scholargate.app/zh/statistics/point-biserial-correlation
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