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| Точково-бисериален коефициент на корелация× | Корелация на Пиърсън (Pearson Product-Moment Correlation)× | |
|---|---|---|
| Област | Статистика | Статистика |
| Семейство | Hypothesis test | Hypothesis test |
| Година на възникване≠ | 1954 | 1895 |
| Създател≠ | Robert F. Tate | Karl Pearson |
| Тип≠ | Parametric correlation coefficient | Parametric correlation |
| Основополагащ източник≠ | Tate, R. F. (1954). Correlation between a discrete and a continuous variable. Point-biserial correlation. Annals of Mathematical Statistics, 25(3), 603–607. DOI ↗ | Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences (2nd ed.). Lawrence Erlbaum Associates. DOI ↗ |
| Други названия≠ | rpb, r_pb, point biserial r, item-total correlation | pearson r, product-moment correlation, bivariate correlation, Pearson Korelasyon Analizi |
| Свързани | 4 | 4 |
| Резюме≠ | The point-biserial correlation coefficient (r_pb) measures the strength and direction of the linear association between one naturally dichotomous variable (coded 0/1) and one continuous variable. It is a special case of the Pearson product-moment correlation formally derived by Tate (1954) in the Annals of Mathematical Statistics and is the standard index used in psychometric item analysis, validity studies, and any research context where a binary grouping variable is related to a continuous outcome. | The Pearson product-moment correlation coefficient (r) is a parametric measure of the direction and strength of the linear association between two continuous variables. Introduced by Karl Pearson in 1895, it remains the most widely used bivariate correlation statistic in the social, health, and natural sciences. The coefficient ranges from −1 (perfect negative linear relationship) to +1 (perfect positive), with 0 indicating no linear association. |
| ScholarGateНабор от данни ↗ |
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