Merge pull request #2 from calculquebec/revision-chap1

Révision du chapitre 1

Author: dlq

src/01-dataframe.ipynb

@@ -972,7 +972,7 @@
     "  * **Sélection** : `df['nom_colonne']`\n",
     "  * **Méthodes** :\n",
     "    * Statistiques descriptives :\n",
-    "      `count()`, `mean()`, `median()`, `min()`, `max()`\n",
+    "      `count()`, `mean()`, `std()`, `min()`, `median()`, `max()`\n",
     "    * Autres : `describe()`, `nunique()`, `unique()`\n",
     "* **Grouper selon les valeurs** d'une ou plusieurs colonnes :\n",
     "  * `groupby(nom_col)`\n",
@@ -1001,7 +1001,7 @@
     "  * **Selection**: `df['column_name']`\n",
     "  * **Methods**:\n",
     "    * Descriptive statistics:\n",
-    "      `count()`, `mean()`, `median()`, `min()`, `max()`\n",
+    "      `count()`, `mean()`, `std()`, `min()`, `median()`, `max()`\n",
     "    * Others: `describe()`, `nunique()`, `unique()`\n",
     "* **Grouping by values** of one or many columns:\n",
     "  * `groupby(column_name)`\n",