diff --git a/module2/exo2/exercice.ipynb b/module2/exo2/exercice.ipynb
index 77ef0105048348febfa62dfd1257c11093b21d8c..75c233108387102663e4f3ea757c0fbfdd5881a1 100644
--- a/module2/exo2/exercice.ipynb
+++ b/module2/exo2/exercice.ipynb
@@ -27,7 +27,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 10,
    "metadata": {},
    "outputs": [
     {
@@ -35,7 +35,7 @@
      "output_type": "stream",
      "text": [
       "14.113000000000001\n",
-      "4.312369534258399\n",
+      "4.334094455301447\n",
       "14.5\n",
       "2.8\n",
       "23.4\n"
@@ -48,7 +48,7 @@
     "moyenne=np.mean(data)\n",
     "print(moyenne)\n",
     "\n",
-    "ecartType=np.std(data)\n",
+    "ecartType=np.std(data, ddof=1)\n",
     "print(ecartType)\n",
     "\n",
     "mediane=np.median(data)\n",
@@ -60,6 +60,13 @@
     "maximum=np.max(data)\n",
     "print(maximum)"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {