update chapter 9 mmm

chapter_9.ipynb

@@ -113,31 +113,31 @@
    "source": [
     "The simulated Media Mix expenditure data comprise weekly media expenditures and reveune data over a four-years period from 11-23-2015 to 11-11-2019, 208 weeks data. \n",
     "\n",
-    "`date`: marketing date\n",
+    "`date`: the bigging date of the week\n",
     "\n",
     "`revenue`: business revenue of the week\n",
     "\n",
     "`tv_s`: tv expenditure of the week \n",
     "\n",
-    "`ooh_s`:\n",
+    "`ooh_s`: the Out-of-home (OOH) channel expenditure \n",
     "\n",
-    "`print_s`:\n",
+    "`print_s`: print media advertising expenditure \n",
     "\n",
-    "`facebook_i`:\n",
+    "`facebook_i`: facebook impression\n",
     "\n",
-    "`search_clicks_p`:\n",
+    "`search_clicks_p`: clicks counts through search results\n",
     "\n",
-    "`search_s`:\n",
+    "`search_s`: expenditure on paid search\n",
     "\n",
-    "`competitor_sales_b`:\n",
+    "`competitor_sales_b`: competitor's sales\n",
     "\n",
-    "`facebook_s`:\n",
+    "`facebook_s`: facebook advertising expenditure\n",
     "\n"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -147,7 +147,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [
     {
@@ -276,7 +276,7 @@
        "4     28401.744069     27100             7105985   20687.478156  "
       ]
      },
-     "execution_count": 10,
+     "execution_count": 2,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -4223,7 +4223,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.11"
+   "version": "3.10.10"
   },
   "widgets": {
    "application/vnd.jupyter.widget-state+json": {