Updated window functions exercises

DareData · Jun 28, 2024 · 85e181f · 85e181f
1 parent 0bfbbe1
commit 85e181f
Showing 1 changed file with 8 additions and 5 deletions.
diff --git a/03_pyspark_advanced/03_01_window_functions/exercises.ipynb b/03_pyspark_advanced/03_01_window_functions/exercises.ipynb
@@ -144,19 +144,22 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "6. Determine the top 3 products with the highest profit margin.\n",
+    "6. Determine the top 3 products with the highest profit margin, for each supplier country.\n",
     "\n",
     "Profit margin refers to the ratio between profit and revenue:\n",
     "\n",
     "$profit\\_margin_{product} = profit_{product} / revenue_{product}$\n",
     "\n",
+    "where\n",
+    "\n",
     "$profit_{product} = revenue_{product} - cost_{product}$\n",
     "\n",
     "Let's break this question down:\n",
-    "- To calculate the cost of each product's order, we need to multiply the cost per unit by the quantity ordered\n",
-    "- Then, we want to get the total revenue and total cost of each product, for each supplier country\n",
-    "- Next, the profit is calculated as the difference between revenue and cost and the profit margin is calculated as the ratio between profit and revenue\n",
-    "- Finally, we rank the products by profit margin and select the top 3"
+    "- To calculate the profit of each product in each supplier country, we need to calculate its total revenue and cost for each supplier country\n",
+    "- To calculate the total cost of each product, we need to multiply the cost per unit by the quantity ordered in each order\n",
+    "- Next, the profit is calculated as the difference between total revenue and total cost\n",
+    "- The profit margin is calculated as the ratio between profit and total revenue\n",
+    "- Finally, the products are ranked by profit margin and the top 3 are selected"
    ]
   },
   {