diff --git a/16_AR.ipynb b/16_AR.ipynb
index e9b94b3..6931439 100644
--- a/16_AR.ipynb
+++ b/16_AR.ipynb
@@ -55,7 +55,7 @@
     "\n",
     "The characteristic polynimial in this case takes the form $f(\\lambda) = 1 - \\phi \\lambda$. Its roots are obtained by solving $1 - \\phi\\lambda = 0$. Hence, $\\lambda= \\frac{1}{\\phi}$.\n",
     "\n",
-    "In many modelling cases, the knowledge of this formulation will suffice for modelling. There is a lot of interesting maths realted to AR models, but we will look at that later. Right now, we are ready to implement AR(1).\n",
+    "In many modelling cases, the knowledge of this formulation will suffice for modelling. There is a lot of interesting maths related to AR models, but we will look at that later. Right now, we are ready to implement AR(1).\n",
     "\n",
     "### AR(1) implementation"
    ]