效應值(effect size)喺統計學上係指一個量度兩個變數之間嘅關係「有幾勁」嘅數值;要得到效應值有好多方法,簡單例子有變數之間嘅相關值(correlation)同埋迴歸分析(regression analysis)當中嘅迴歸系數[1]。
- ↑ Rosenthal, Robert, H. Cooper, and L. Hedges. "Parametric measures of effect size." The handbook of research synthesis, 621 (1994): 231–244.