diff --git a/module2/exo2/Untitled.ipynb b/module2/exo2/Untitled.ipynb
new file mode 100644
index 0000000000000000000000000000000000000000..7fec51502cbc3200b3d0ffc6bbba1fe85e197f3d
--- /dev/null
+++ b/module2/exo2/Untitled.ipynb
@@ -0,0 +1,6 @@
+{
+ "cells": [],
+ "metadata": {},
+ "nbformat": 4,
+ "nbformat_minor": 4
+}
diff --git a/module2/exo2/exercice_fr.ipynb b/module2/exo2/exercice_fr.ipynb
index 0bbbe371b01e359e381e43239412d77bf53fb1fb..4f5f1dc11d1ed1eba3f0bdb361ce8f573296bf70 100644
--- a/module2/exo2/exercice_fr.ipynb
+++ b/module2/exo2/exercice_fr.ipynb
@@ -1,25 +1,561 @@
 {
- "cells": [],
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# title: Exercice 2 du module 2"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# author: MalamMamane I. L."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "#  date: Vendredi, le 22 Mai 2020"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Données à traiter"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<ol class=list-inline>\n",
+       "\t<li>14</li>\n",
+       "\t<li>7.6</li>\n",
+       "\t<li>11.2</li>\n",
+       "\t<li>12.8</li>\n",
+       "\t<li>12.5</li>\n",
+       "\t<li>9.9</li>\n",
+       "\t<li>14.9</li>\n",
+       "\t<li>9.4</li>\n",
+       "\t<li>16.9</li>\n",
+       "\t<li>10.2</li>\n",
+       "\t<li>14.9</li>\n",
+       "\t<li>18.1</li>\n",
+       "\t<li>7.3</li>\n",
+       "\t<li>9.8</li>\n",
+       "\t<li>10.9</li>\n",
+       "\t<li>12.2</li>\n",
+       "\t<li>9.9</li>\n",
+       "\t<li>2.9</li>\n",
+       "\t<li>2.8</li>\n",
+       "\t<li>15.4</li>\n",
+       "\t<li>15.7</li>\n",
+       "\t<li>9.7</li>\n",
+       "\t<li>13.1</li>\n",
+       "\t<li>13.2</li>\n",
+       "\t<li>12.3</li>\n",
+       "\t<li>11.7</li>\n",
+       "\t<li>16</li>\n",
+       "\t<li>12.4</li>\n",
+       "\t<li>17.9</li>\n",
+       "\t<li>12.2</li>\n",
+       "\t<li>16.2</li>\n",
+       "\t<li>18.7</li>\n",
+       "\t<li>8.9</li>\n",
+       "\t<li>11.9</li>\n",
+       "\t<li>12.1</li>\n",
+       "\t<li>14.6</li>\n",
+       "\t<li>12.1</li>\n",
+       "\t<li>4.7</li>\n",
+       "\t<li>3.9</li>\n",
+       "\t<li>16.9</li>\n",
+       "\t<li>16.8</li>\n",
+       "\t<li>11.3</li>\n",
+       "\t<li>14.4</li>\n",
+       "\t<li>15.7</li>\n",
+       "\t<li>14</li>\n",
+       "\t<li>13.6</li>\n",
+       "\t<li>18</li>\n",
+       "\t<li>13.6</li>\n",
+       "\t<li>19.9</li>\n",
+       "\t<li>13.7</li>\n",
+       "\t<li>17</li>\n",
+       "\t<li>20.5</li>\n",
+       "\t<li>9.9</li>\n",
+       "\t<li>12.5</li>\n",
+       "\t<li>13.2</li>\n",
+       "\t<li>16.1</li>\n",
+       "\t<li>13.5</li>\n",
+       "\t<li>6.3</li>\n",
+       "\t<li>6.4</li>\n",
+       "\t<li>17.6</li>\n",
+       "\t<li>19.1</li>\n",
+       "\t<li>12.8</li>\n",
+       "\t<li>15.5</li>\n",
+       "\t<li>16.3</li>\n",
+       "\t<li>15.2</li>\n",
+       "\t<li>14.6</li>\n",
+       "\t<li>19.1</li>\n",
+       "\t<li>14.4</li>\n",
+       "\t<li>21.4</li>\n",
+       "\t<li>15.1</li>\n",
+       "\t<li>19.6</li>\n",
+       "\t<li>21.7</li>\n",
+       "\t<li>11.3</li>\n",
+       "\t<li>15</li>\n",
+       "\t<li>14.3</li>\n",
+       "\t<li>16.8</li>\n",
+       "\t<li>14</li>\n",
+       "\t<li>6.8</li>\n",
+       "\t<li>8.2</li>\n",
+       "\t<li>19.9</li>\n",
+       "\t<li>20.4</li>\n",
+       "\t<li>14.6</li>\n",
+       "\t<li>16.4</li>\n",
+       "\t<li>18.7</li>\n",
+       "\t<li>16.8</li>\n",
+       "\t<li>15.8</li>\n",
+       "\t<li>20.4</li>\n",
+       "\t<li>15.8</li>\n",
+       "\t<li>22.4</li>\n",
+       "\t<li>16.2</li>\n",
+       "\t<li>20.3</li>\n",
+       "\t<li>23.4</li>\n",
+       "\t<li>12.1</li>\n",
+       "\t<li>15.5</li>\n",
+       "\t<li>15.4</li>\n",
+       "\t<li>18.4</li>\n",
+       "\t<li>15.7</li>\n",
+       "\t<li>10.2</li>\n",
+       "\t<li>8.9</li>\n",
+       "\t<li>21</li>\n",
+       "</ol>\n"
+      ],
+      "text/latex": [
+       "\\begin{enumerate*}\n",
+       "\\item 14\n",
+       "\\item 7.6\n",
+       "\\item 11.2\n",
+       "\\item 12.8\n",
+       "\\item 12.5\n",
+       "\\item 9.9\n",
+       "\\item 14.9\n",
+       "\\item 9.4\n",
+       "\\item 16.9\n",
+       "\\item 10.2\n",
+       "\\item 14.9\n",
+       "\\item 18.1\n",
+       "\\item 7.3\n",
+       "\\item 9.8\n",
+       "\\item 10.9\n",
+       "\\item 12.2\n",
+       "\\item 9.9\n",
+       "\\item 2.9\n",
+       "\\item 2.8\n",
+       "\\item 15.4\n",
+       "\\item 15.7\n",
+       "\\item 9.7\n",
+       "\\item 13.1\n",
+       "\\item 13.2\n",
+       "\\item 12.3\n",
+       "\\item 11.7\n",
+       "\\item 16\n",
+       "\\item 12.4\n",
+       "\\item 17.9\n",
+       "\\item 12.2\n",
+       "\\item 16.2\n",
+       "\\item 18.7\n",
+       "\\item 8.9\n",
+       "\\item 11.9\n",
+       "\\item 12.1\n",
+       "\\item 14.6\n",
+       "\\item 12.1\n",
+       "\\item 4.7\n",
+       "\\item 3.9\n",
+       "\\item 16.9\n",
+       "\\item 16.8\n",
+       "\\item 11.3\n",
+       "\\item 14.4\n",
+       "\\item 15.7\n",
+       "\\item 14\n",
+       "\\item 13.6\n",
+       "\\item 18\n",
+       "\\item 13.6\n",
+       "\\item 19.9\n",
+       "\\item 13.7\n",
+       "\\item 17\n",
+       "\\item 20.5\n",
+       "\\item 9.9\n",
+       "\\item 12.5\n",
+       "\\item 13.2\n",
+       "\\item 16.1\n",
+       "\\item 13.5\n",
+       "\\item 6.3\n",
+       "\\item 6.4\n",
+       "\\item 17.6\n",
+       "\\item 19.1\n",
+       "\\item 12.8\n",
+       "\\item 15.5\n",
+       "\\item 16.3\n",
+       "\\item 15.2\n",
+       "\\item 14.6\n",
+       "\\item 19.1\n",
+       "\\item 14.4\n",
+       "\\item 21.4\n",
+       "\\item 15.1\n",
+       "\\item 19.6\n",
+       "\\item 21.7\n",
+       "\\item 11.3\n",
+       "\\item 15\n",
+       "\\item 14.3\n",
+       "\\item 16.8\n",
+       "\\item 14\n",
+       "\\item 6.8\n",
+       "\\item 8.2\n",
+       "\\item 19.9\n",
+       "\\item 20.4\n",
+       "\\item 14.6\n",
+       "\\item 16.4\n",
+       "\\item 18.7\n",
+       "\\item 16.8\n",
+       "\\item 15.8\n",
+       "\\item 20.4\n",
+       "\\item 15.8\n",
+       "\\item 22.4\n",
+       "\\item 16.2\n",
+       "\\item 20.3\n",
+       "\\item 23.4\n",
+       "\\item 12.1\n",
+       "\\item 15.5\n",
+       "\\item 15.4\n",
+       "\\item 18.4\n",
+       "\\item 15.7\n",
+       "\\item 10.2\n",
+       "\\item 8.9\n",
+       "\\item 21\n",
+       "\\end{enumerate*}\n"
+      ],
+      "text/markdown": [
+       "1. 14\n",
+       "2. 7.6\n",
+       "3. 11.2\n",
+       "4. 12.8\n",
+       "5. 12.5\n",
+       "6. 9.9\n",
+       "7. 14.9\n",
+       "8. 9.4\n",
+       "9. 16.9\n",
+       "10. 10.2\n",
+       "11. 14.9\n",
+       "12. 18.1\n",
+       "13. 7.3\n",
+       "14. 9.8\n",
+       "15. 10.9\n",
+       "16. 12.2\n",
+       "17. 9.9\n",
+       "18. 2.9\n",
+       "19. 2.8\n",
+       "20. 15.4\n",
+       "21. 15.7\n",
+       "22. 9.7\n",
+       "23. 13.1\n",
+       "24. 13.2\n",
+       "25. 12.3\n",
+       "26. 11.7\n",
+       "27. 16\n",
+       "28. 12.4\n",
+       "29. 17.9\n",
+       "30. 12.2\n",
+       "31. 16.2\n",
+       "32. 18.7\n",
+       "33. 8.9\n",
+       "34. 11.9\n",
+       "35. 12.1\n",
+       "36. 14.6\n",
+       "37. 12.1\n",
+       "38. 4.7\n",
+       "39. 3.9\n",
+       "40. 16.9\n",
+       "41. 16.8\n",
+       "42. 11.3\n",
+       "43. 14.4\n",
+       "44. 15.7\n",
+       "45. 14\n",
+       "46. 13.6\n",
+       "47. 18\n",
+       "48. 13.6\n",
+       "49. 19.9\n",
+       "50. 13.7\n",
+       "51. 17\n",
+       "52. 20.5\n",
+       "53. 9.9\n",
+       "54. 12.5\n",
+       "55. 13.2\n",
+       "56. 16.1\n",
+       "57. 13.5\n",
+       "58. 6.3\n",
+       "59. 6.4\n",
+       "60. 17.6\n",
+       "61. 19.1\n",
+       "62. 12.8\n",
+       "63. 15.5\n",
+       "64. 16.3\n",
+       "65. 15.2\n",
+       "66. 14.6\n",
+       "67. 19.1\n",
+       "68. 14.4\n",
+       "69. 21.4\n",
+       "70. 15.1\n",
+       "71. 19.6\n",
+       "72. 21.7\n",
+       "73. 11.3\n",
+       "74. 15\n",
+       "75. 14.3\n",
+       "76. 16.8\n",
+       "77. 14\n",
+       "78. 6.8\n",
+       "79. 8.2\n",
+       "80. 19.9\n",
+       "81. 20.4\n",
+       "82. 14.6\n",
+       "83. 16.4\n",
+       "84. 18.7\n",
+       "85. 16.8\n",
+       "86. 15.8\n",
+       "87. 20.4\n",
+       "88. 15.8\n",
+       "89. 22.4\n",
+       "90. 16.2\n",
+       "91. 20.3\n",
+       "92. 23.4\n",
+       "93. 12.1\n",
+       "94. 15.5\n",
+       "95. 15.4\n",
+       "96. 18.4\n",
+       "97. 15.7\n",
+       "98. 10.2\n",
+       "99. 8.9\n",
+       "100. 21\n",
+       "\n",
+       "\n"
+      ],
+      "text/plain": [
+       "  [1] 14.0  7.6 11.2 12.8 12.5  9.9 14.9  9.4 16.9 10.2 14.9 18.1  7.3  9.8 10.9\n",
+       " [16] 12.2  9.9  2.9  2.8 15.4 15.7  9.7 13.1 13.2 12.3 11.7 16.0 12.4 17.9 12.2\n",
+       " [31] 16.2 18.7  8.9 11.9 12.1 14.6 12.1  4.7  3.9 16.9 16.8 11.3 14.4 15.7 14.0\n",
+       " [46] 13.6 18.0 13.6 19.9 13.7 17.0 20.5  9.9 12.5 13.2 16.1 13.5  6.3  6.4 17.6\n",
+       " [61] 19.1 12.8 15.5 16.3 15.2 14.6 19.1 14.4 21.4 15.1 19.6 21.7 11.3 15.0 14.3\n",
+       " [76] 16.8 14.0  6.8  8.2 19.9 20.4 14.6 16.4 18.7 16.8 15.8 20.4 15.8 22.4 16.2\n",
+       " [91] 20.3 23.4 12.1 15.5 15.4 18.4 15.7 10.2  8.9 21.0"
+      ]
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "x<-c(14.0, 7.6, 11.2, 12.8, 12.5, 9.9, 14.9, 9.4, 16.9, 10.2, 14.9, 18.1, 7.3, 9.8, 10.9,12.2, 9.9, 2.9, 2.8, 15.4, 15.7, 9.7, 13.1, 13.2, 12.3, 11.7, 16.0, 12.4, 17.9, 12.2, 16.2, 18.7, 8.9, 11.9, 12.1, 14.6, 12.1, 4.7, 3.9, 16.9, 16.8, 11.3, 14.4, 15.7, 14.0, 13.6, 18.0, 13.6, 19.9, 13.7, 17.0, 20.5, 9.9, 12.5, 13.2, 16.1, 13.5, 6.3, 6.4, 17.6, 19.1, 12.8, 15.5, 16.3, 15.2, 14.6, 19.1, 14.4, 21.4, 15.1, 19.6, 21.7, 11.3, 15.0, 14.3, 16.8, 14.0, 6.8, 8.2, 19.9, 20.4, 14.6, 16.4, 18.7, 16.8, 15.8, 20.4, 15.8, 22.4, 16.2, 20.3, 23.4, 12.1, 15.5, 15.4, 18.4, 15.7, 10.2, 8.9, 21.0)\n",
+    "x"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "14.11"
+      ],
+      "text/latex": [
+       "14.11"
+      ],
+      "text/markdown": [
+       "14.11"
+      ],
+      "text/plain": [
+       "[1] 14.11"
+      ]
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "mean<-round(mean(x),2)\n",
+    "mean"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "14.11"
+      ],
+      "text/latex": [
+       "14.11"
+      ],
+      "text/markdown": [
+       "14.11"
+      ],
+      "text/plain": [
+       "[1] 14.11"
+      ]
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    " mean<-round(mean(x),2)\n",
+    " mean"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "2.8"
+      ],
+      "text/latex": [
+       "2.8"
+      ],
+      "text/markdown": [
+       "2.8"
+      ],
+      "text/plain": [
+       "[1] 2.8"
+      ]
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "minimum<-round(min(x),2)\n",
+    "minimum"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "23.4"
+      ],
+      "text/latex": [
+       "23.4"
+      ],
+      "text/markdown": [
+       "23.4"
+      ],
+      "text/plain": [
+       "[1] 23.4"
+      ]
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "maximum<-round(max(x),2)\n",
+    "maximum"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "14.5"
+      ],
+      "text/latex": [
+       "14.5"
+      ],
+      "text/markdown": [
+       "14.5"
+      ],
+      "text/plain": [
+       "[1] 14.5"
+      ]
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "mediane<-round(median(x),2)\n",
+    "mediane"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 9,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "4.33"
+      ],
+      "text/latex": [
+       "4.33"
+      ],
+      "text/markdown": [
+       "4.33"
+      ],
+      "text/plain": [
+       "[1] 4.33"
+      ]
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "ecart_type<-round(sd(x),2)\n",
+    "ecart_type"
+   ]
+  }
+ ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
+   "display_name": "R",
+   "language": "R",
+   "name": "ir"
   },
   "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.6.3"
+   "codemirror_mode": "r",
+   "file_extension": ".r",
+   "mimetype": "text/x-r-source",
+   "name": "R",
+   "pygments_lexer": "r",
+   "version": "3.4.1"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }
-