From 2703aa864cc01f1ae7c80825810e599386d78c87 Mon Sep 17 00:00:00 2001
From: Berend Bouvy <b.n.bouvy@student.tudelft.nl>
Date: Wed, 15 Jan 2025 14:38:13 +0100
Subject: [PATCH] fixed typo
---
book/time_series/acf.md | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/book/time_series/acf.md b/book/time_series/acf.md
index f1ff9c74..6a25836d 100644
--- a/book/time_series/acf.md
+++ b/book/time_series/acf.md
@@ -249,7 +249,7 @@ And
$$
\hat{C}_1
-= \frac{\sum_{i=1}^{m} S_i S_{i+1}}{m-1}
+= \frac{\sum_{i=1}^{m-1} S_i S_{i+1}}{m-1}
= \frac{2(1) + 1(0) + 0(-1) + (-1)(-2)}{5 - 1}
= \frac{2 + 0 + 0 + 2}{4}
= 1
--
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