adding stds explicitly

Author: CamDavidsonPilon

Chapter3_MCMC/Chapter3.ipynb

@@ -450,7 +450,8 @@
     }
    ],
    "source": [
-    "taus = 1.0 / pm.Uniform(\"stds\", 0, 100, size=2) ** 2\n",
+    "stds = pm.Uniform(\"stds\", 0, 100, size=2)\n",
+    "taus = 1.0 / stds ** 2\n",
     "centers = pm.Normal(\"centers\", [120, 190], [0.01, 0.01], size=2)\n",
     "\n",
     "\"\"\"\n",
@@ -1451,7 +1452,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython2",
-   "version": "2.7.6"
+   "version": "2.7.11"
   }
  },
  "nbformat": 4,