2014-03-30 21:53:51解讀統計與研究譯者

迴歸分析裡殘差的圖形表徵


Illustration of regression residuals

右圖的黑點是觀察值 斜線是回歸線 黑點到斜線的距離是"殘差(residual)"







source: http://blog.minitab.com/blog/adventures-in-statistics/regression-analysis-how-do-i-interpret-r-squared-and-assess-the-goodness-of-fit