diff --git a/module2/exo2/exercice.ipynb b/module2/exo2/exercice.ipynb
index 57eb92ee5e94e0128647d20ef2ead56ba41ab183..800b657a0be3a5cab33e9bdf8c3d5b3ea4d237ff 100644
--- a/module2/exo2/exercice.ipynb
+++ b/module2/exo2/exercice.ipynb
@@ -35,7 +35,7 @@
     {
      "data": {
       "text/plain": [
-       "4.312369534258399"
+       "14.113000000000001"
       ]
      },
      "execution_count": 2,
@@ -50,11 +50,22 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 8,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "4.334094455301447"
+      ]
+     },
+     "execution_count": 8,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "np.std(DONNEES)"
+    "np.std(DONNEES, ddof=1)"
    ]
   },
   {
@@ -66,16 +77,16 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "text/plain": [
-       "23.4"
+       "2.8"
       ]
      },
-     "execution_count": 3,
+     "execution_count": 4,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -86,9 +97,20 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "23.4"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "max(DONNEES)"
    ]
@@ -102,7 +124,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 6,
    "metadata": {},
    "outputs": [
     {
@@ -111,7 +133,7 @@
        "14.5"
       ]
      },
-     "execution_count": 4,
+     "execution_count": 6,
      "metadata": {},
      "output_type": "execute_result"
     }