fix H1 bias

Author: demon386

bias-variance.ipynb

@@ -546,22 +546,22 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 145,
+   "execution_count": 158,
    "metadata": {},
    "outputs": [
     {
      "data": {
       "text/plain": [
-       "0.20139664888649592"
+       "0.20670007189530804"
       ]
      },
-     "execution_count": 145,
+     "execution_count": 158,
      "metadata": {},
      "output_type": "execute_result"
     }
    ],
    "source": [
-    "((h1_bar[0] * x + h1_bar[1])**2).mean()"
+    "((h1_bar[0] * x + h1_bar[1] - y)**2).mean()"
    ]
   },
   {