diff --git a/.ipynb_checkpoints/Connect Python_MySQL-D-checkpoint.ipynb b/.ipynb_checkpoints/Connect Python_MySQL-D-checkpoint.ipynb
index eab587d..90cf311 100644
--- a/.ipynb_checkpoints/Connect Python_MySQL-D-checkpoint.ipynb	
+++ b/.ipynb_checkpoints/Connect Python_MySQL-D-checkpoint.ipynb	
@@ -83,7 +83,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a724f5bb",
+   "id": "fd2da802",
    "metadata": {},
    "source": [
     "Inspect the Data Base"
@@ -100141,7 +100141,7 @@
   {
    "cell_type": "code",
    "execution_count": 15,
-   "id": "c2c50951",
+   "id": "8b8e1dff",
    "metadata": {},
    "outputs": [
     {
@@ -100279,7 +100279,7 @@
   {
    "cell_type": "code",
    "execution_count": 17,
-   "id": "9e3c9f17",
+   "id": "f065e8a7",
    "metadata": {},
    "outputs": [
     {
@@ -100416,7 +100416,7 @@
   {
    "cell_type": "code",
    "execution_count": 18,
-   "id": "2f7a5664",
+   "id": "09884db8",
    "metadata": {},
    "outputs": [
     {
@@ -100516,7 +100516,7 @@
   {
    "cell_type": "code",
    "execution_count": 25,
-   "id": "6bc399a4",
+   "id": "0ca2cd8d",
    "metadata": {},
    "outputs": [
     {
@@ -100622,7 +100622,7 @@
   {
    "cell_type": "code",
    "execution_count": 28,
-   "id": "76e9c080",
+   "id": "457af3fd",
    "metadata": {},
    "outputs": [
     {
@@ -100746,12 +100746,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 67,
-   "id": "9bef36fe",
+   "execution_count": 69,
+   "id": "31611c8d",
    "metadata": {},
    "outputs": [],
    "source": [
-    "# query8 = \"SELECT * olist.order_items INNER JOIN olist.order_status_year_price ON order_id\"\n",
+    "# query8 = \"SELECT * olist.order_items JOIN olist.order_status_year_price ON order_item_id\"\n",
     "# res_df = pd.read_sql_query(query8, db_connection)\n",
     "# res_df.head()"
    ]
@@ -100759,7 +100759,7 @@
   {
    "cell_type": "code",
    "execution_count": 51,
-   "id": "0dac0a0b",
+   "id": "ca02e3f6",
    "metadata": {},
    "outputs": [
     {
@@ -100865,7 +100865,7 @@
   {
    "cell_type": "code",
    "execution_count": 54,
-   "id": "ad215e0a",
+   "id": "59fd5502",
    "metadata": {},
    "outputs": [
     {
@@ -100995,7 +100995,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "818548a2",
+   "id": "8fc7b14a",
    "metadata": {},
    "source": [
     "### Data exploration"
@@ -101004,7 +101004,7 @@
   {
    "cell_type": "code",
    "execution_count": 21,
-   "id": "85806400",
+   "id": "2956ef12",
    "metadata": {},
    "outputs": [
     {
@@ -101027,7 +101027,7 @@
   {
    "cell_type": "code",
    "execution_count": 23,
-   "id": "a99a41f3",
+   "id": "cfac4819",
    "metadata": {},
    "outputs": [
     {
@@ -101048,7 +101048,7 @@
   {
    "cell_type": "code",
    "execution_count": 26,
-   "id": "6815d389",
+   "id": "dc2268f5",
    "metadata": {},
    "outputs": [
     {
@@ -101069,7 +101069,7 @@
   {
    "cell_type": "code",
    "execution_count": 29,
-   "id": "636434a7",
+   "id": "2fe8f647",
    "metadata": {},
    "outputs": [
     {
@@ -101090,7 +101090,7 @@
   {
    "cell_type": "code",
    "execution_count": 55,
-   "id": "432b4175",
+   "id": "d30a6203",
    "metadata": {},
    "outputs": [
     {
@@ -101111,7 +101111,7 @@
   {
    "cell_type": "code",
    "execution_count": 56,
-   "id": "9944eaeb",
+   "id": "471e0cfc",
    "metadata": {},
    "outputs": [
     {
@@ -101132,7 +101132,7 @@
   {
    "cell_type": "code",
    "execution_count": 35,
-   "id": "a692627a",
+   "id": "cda20df7",
    "metadata": {},
    "outputs": [
     {
@@ -101153,7 +101153,7 @@
   {
    "cell_type": "code",
    "execution_count": 38,
-   "id": "38383622",
+   "id": "b63018f5",
    "metadata": {},
    "outputs": [
     {
@@ -101174,17 +101174,133 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "211b8568",
+   "id": "6f71fc7f",
    "metadata": {},
    "outputs": [],
    "source": [
     "# columns of interest: product_id\tproduct_category_name\tproduct_weight_g\tproduct_length_cm\tproduct_height_cm\tproduct_width_cm"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 77,
+   "id": "a796e709",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "count    32945.000000\n",
+       "mean      2276.748885\n",
+       "std       4282.225204\n",
+       "min          2.000000\n",
+       "25%        300.000000\n",
+       "50%        700.000000\n",
+       "75%       1900.000000\n",
+       "max      40425.000000\n",
+       "Name: product_weight_g, dtype: float64"
+      ]
+     },
+     "execution_count": 77,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "products_df['product_weight_g'].describe() #take median"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 78,
+   "id": "be8f7039",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "count    32949.000000\n",
+       "mean        30.815078\n",
+       "std         16.914458\n",
+       "min          7.000000\n",
+       "25%         18.000000\n",
+       "50%         25.000000\n",
+       "75%         38.000000\n",
+       "max        105.000000\n",
+       "Name: product_length_cm, dtype: float64"
+      ]
+     },
+     "execution_count": 78,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "products_df['product_length_cm'].describe() #take average"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 79,
+   "id": "0271cb2d",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "count    32949.000000\n",
+       "mean        16.937661\n",
+       "std         13.637554\n",
+       "min          2.000000\n",
+       "25%          8.000000\n",
+       "50%         13.000000\n",
+       "75%         21.000000\n",
+       "max        105.000000\n",
+       "Name: product_height_cm, dtype: float64"
+      ]
+     },
+     "execution_count": 79,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "products_df['product_height_cm'].describe() #take average"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 80,
+   "id": "ac8d3124",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "count    32949.000000\n",
+       "mean        23.196728\n",
+       "std         12.079047\n",
+       "min          6.000000\n",
+       "25%         15.000000\n",
+       "50%         20.000000\n",
+       "75%         30.000000\n",
+       "max        118.000000\n",
+       "Name: product_width_cm, dtype: float64"
+      ]
+     },
+     "execution_count": 80,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "products_df['product_width_cm'].describe() #take average"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 36,
-   "id": "9c325836",
+   "id": "c098908b",
    "metadata": {},
    "outputs": [
     {
@@ -101205,7 +101321,7 @@
   {
    "cell_type": "code",
    "execution_count": 39,
-   "id": "9434e037",
+   "id": "09cd1275",
    "metadata": {},
    "outputs": [
     {
@@ -101226,7 +101342,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "05b48544",
+   "id": "f94b5920",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -101235,7 +101351,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ce588579",
+   "id": "ccf39e09",
    "metadata": {},
    "source": [
     "### Data cleaning pipeline"
@@ -101244,7 +101360,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "8132c302",
+   "id": "f69c99db",
    "metadata": {},
    "outputs": [],
    "source": [
diff --git a/Connect Python_MySQL-D.ipynb b/Connect Python_MySQL-D.ipynb
index eab587d..90cf311 100644
--- a/Connect Python_MySQL-D.ipynb	
+++ b/Connect Python_MySQL-D.ipynb	
@@ -83,7 +83,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a724f5bb",
+   "id": "fd2da802",
    "metadata": {},
    "source": [
     "Inspect the Data Base"
@@ -100141,7 +100141,7 @@
   {
    "cell_type": "code",
    "execution_count": 15,
-   "id": "c2c50951",
+   "id": "8b8e1dff",
    "metadata": {},
    "outputs": [
     {
@@ -100279,7 +100279,7 @@
   {
    "cell_type": "code",
    "execution_count": 17,
-   "id": "9e3c9f17",
+   "id": "f065e8a7",
    "metadata": {},
    "outputs": [
     {
@@ -100416,7 +100416,7 @@
   {
    "cell_type": "code",
    "execution_count": 18,
-   "id": "2f7a5664",
+   "id": "09884db8",
    "metadata": {},
    "outputs": [
     {
@@ -100516,7 +100516,7 @@
   {
    "cell_type": "code",
    "execution_count": 25,
-   "id": "6bc399a4",
+   "id": "0ca2cd8d",
    "metadata": {},
    "outputs": [
     {
@@ -100622,7 +100622,7 @@
   {
    "cell_type": "code",
    "execution_count": 28,
-   "id": "76e9c080",
+   "id": "457af3fd",
    "metadata": {},
    "outputs": [
     {
@@ -100746,12 +100746,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 67,
-   "id": "9bef36fe",
+   "execution_count": 69,
+   "id": "31611c8d",
    "metadata": {},
    "outputs": [],
    "source": [
-    "# query8 = \"SELECT * olist.order_items INNER JOIN olist.order_status_year_price ON order_id\"\n",
+    "# query8 = \"SELECT * olist.order_items JOIN olist.order_status_year_price ON order_item_id\"\n",
     "# res_df = pd.read_sql_query(query8, db_connection)\n",
     "# res_df.head()"
    ]
@@ -100759,7 +100759,7 @@
   {
    "cell_type": "code",
    "execution_count": 51,
-   "id": "0dac0a0b",
+   "id": "ca02e3f6",
    "metadata": {},
    "outputs": [
     {
@@ -100865,7 +100865,7 @@
   {
    "cell_type": "code",
    "execution_count": 54,
-   "id": "ad215e0a",
+   "id": "59fd5502",
    "metadata": {},
    "outputs": [
     {
@@ -100995,7 +100995,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "818548a2",
+   "id": "8fc7b14a",
    "metadata": {},
    "source": [
     "### Data exploration"
@@ -101004,7 +101004,7 @@
   {
    "cell_type": "code",
    "execution_count": 21,
-   "id": "85806400",
+   "id": "2956ef12",
    "metadata": {},
    "outputs": [
     {
@@ -101027,7 +101027,7 @@
   {
    "cell_type": "code",
    "execution_count": 23,
-   "id": "a99a41f3",
+   "id": "cfac4819",
    "metadata": {},
    "outputs": [
     {
@@ -101048,7 +101048,7 @@
   {
    "cell_type": "code",
    "execution_count": 26,
-   "id": "6815d389",
+   "id": "dc2268f5",
    "metadata": {},
    "outputs": [
     {
@@ -101069,7 +101069,7 @@
   {
    "cell_type": "code",
    "execution_count": 29,
-   "id": "636434a7",
+   "id": "2fe8f647",
    "metadata": {},
    "outputs": [
     {
@@ -101090,7 +101090,7 @@
   {
    "cell_type": "code",
    "execution_count": 55,
-   "id": "432b4175",
+   "id": "d30a6203",
    "metadata": {},
    "outputs": [
     {
@@ -101111,7 +101111,7 @@
   {
    "cell_type": "code",
    "execution_count": 56,
-   "id": "9944eaeb",
+   "id": "471e0cfc",
    "metadata": {},
    "outputs": [
     {
@@ -101132,7 +101132,7 @@
   {
    "cell_type": "code",
    "execution_count": 35,
-   "id": "a692627a",
+   "id": "cda20df7",
    "metadata": {},
    "outputs": [
     {
@@ -101153,7 +101153,7 @@
   {
    "cell_type": "code",
    "execution_count": 38,
-   "id": "38383622",
+   "id": "b63018f5",
    "metadata": {},
    "outputs": [
     {
@@ -101174,17 +101174,133 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "211b8568",
+   "id": "6f71fc7f",
    "metadata": {},
    "outputs": [],
    "source": [
     "# columns of interest: product_id\tproduct_category_name\tproduct_weight_g\tproduct_length_cm\tproduct_height_cm\tproduct_width_cm"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 77,
+   "id": "a796e709",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "count    32945.000000\n",
+       "mean      2276.748885\n",
+       "std       4282.225204\n",
+       "min          2.000000\n",
+       "25%        300.000000\n",
+       "50%        700.000000\n",
+       "75%       1900.000000\n",
+       "max      40425.000000\n",
+       "Name: product_weight_g, dtype: float64"
+      ]
+     },
+     "execution_count": 77,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "products_df['product_weight_g'].describe() #take median"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 78,
+   "id": "be8f7039",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "count    32949.000000\n",
+       "mean        30.815078\n",
+       "std         16.914458\n",
+       "min          7.000000\n",
+       "25%         18.000000\n",
+       "50%         25.000000\n",
+       "75%         38.000000\n",
+       "max        105.000000\n",
+       "Name: product_length_cm, dtype: float64"
+      ]
+     },
+     "execution_count": 78,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "products_df['product_length_cm'].describe() #take average"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 79,
+   "id": "0271cb2d",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "count    32949.000000\n",
+       "mean        16.937661\n",
+       "std         13.637554\n",
+       "min          2.000000\n",
+       "25%          8.000000\n",
+       "50%         13.000000\n",
+       "75%         21.000000\n",
+       "max        105.000000\n",
+       "Name: product_height_cm, dtype: float64"
+      ]
+     },
+     "execution_count": 79,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "products_df['product_height_cm'].describe() #take average"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 80,
+   "id": "ac8d3124",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "count    32949.000000\n",
+       "mean        23.196728\n",
+       "std         12.079047\n",
+       "min          6.000000\n",
+       "25%         15.000000\n",
+       "50%         20.000000\n",
+       "75%         30.000000\n",
+       "max        118.000000\n",
+       "Name: product_width_cm, dtype: float64"
+      ]
+     },
+     "execution_count": 80,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "products_df['product_width_cm'].describe() #take average"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 36,
-   "id": "9c325836",
+   "id": "c098908b",
    "metadata": {},
    "outputs": [
     {
@@ -101205,7 +101321,7 @@
   {
    "cell_type": "code",
    "execution_count": 39,
-   "id": "9434e037",
+   "id": "09cd1275",
    "metadata": {},
    "outputs": [
     {
@@ -101226,7 +101342,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "05b48544",
+   "id": "f94b5920",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -101235,7 +101351,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "ce588579",
+   "id": "ccf39e09",
    "metadata": {},
    "source": [
     "### Data cleaning pipeline"
@@ -101244,7 +101360,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "8132c302",
+   "id": "f69c99db",
    "metadata": {},
    "outputs": [],
    "source": [