diff --git a/doc/pub/Statistics/html/Statistics.html b/doc/pub/Statistics/html/Statistics.html
index 69ed6b58c..44113f385 100644
--- a/doc/pub/Statistics/html/Statistics.html
+++ b/doc/pub/Statistics/html/Statistics.html
@@ -1182,7 +1182,7 @@ <h2 id="___sec28">Meet the  covariance, uncorrelated events </h2>
 
 If \( X_i \) and \( X_j \) are independent, we get 
 $$
-\langle x_i x_j\rangle =
+\langle x_i x_j\rangle -
 \langle x_i\rangle\langle x_j\rangle=\mathrm{Cov}(X_i, X_j) = 0\ \ (i\neq j).
 $$
 </div>