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--- correlation [2017/05/12 09:09] – [Spearman Correlation] hkimscil
+++ correlation [2018/04/30 08:17] – [Pearson's r] hkimscil
@@ Line 59: / Line 59: @@
     * Half-and-half reliability test.
+===== 공분산 =====
+$$ \text{cov(x, y)} = \frac{\Sigma_{i-1}^{n}(x_i-\bar{x})(y_i-\bar{y})}{n-1}$$
 ====== Pearson's r ======
 Pearson's r:: 두 변인 간의 선형적 관계의 크기와 방향성을 측정하는 방법