Merge pull request CamDavidsonPilon#488 from nstjhp/master

CamDavidsonPilon · web-flow · commit 53935427cb4a · 2020-02-20T17:52:20.000-05:00
Chapter 4 indicator function - fix probability calculation
diff --git a/Chapter4_TheGreatestTheoremNeverTold/Ch4_LawOfLargeNumbers_TFP.ipynb b/Chapter4_TheGreatestTheoremNeverTold/Ch4_LawOfLargeNumbers_TFP.ipynb
@@ -585,14 +585,14 @@
       "source": [
         "N = 10000\n",
         "\n",
-        "print(\"Probability Estimate: \", len(np.where(evaluate(tfd.Exponential(rate=0.5).sample(sample_shape=N)) > 5))/N )"
+        "print(\"Probability Estimate: \", np.shape(np.where(evaluate(tfd.Exponential(rate=0.5).sample(sample_shape=N)) > 5))[1]/N )"
       ],
       "execution_count": 4,
       "outputs": [
         {
           "output_type": "stream",
           "text": [
-            "Probability Estimate:  0.0001\n"
+            "Probability Estimate:  0.0823\n"
           ],
           "name": "stdout"
         }
@@ -2097,4 +2097,4 @@
       ]
     }
   ]
-}
+}

Original file line number	Diff line number	Diff line change
`@@ -585,14 +585,14 @@`
`585`	`585`	`"source": [`
`586`	`586`	`"N = 10000\n",`
`587`	`587`	`"\n",`
`588`		`- "print(\"Probability Estimate: \", len(np.where(evaluate(tfd.Exponential(rate=0.5).sample(sample_shape=N)) > 5))/N )"`
	`588`	`+ "print(\"Probability Estimate: \", np.shape(np.where(evaluate(tfd.Exponential(rate=0.5).sample(sample_shape=N)) > 5))[1]/N )"`
`589`	`589`	`],`
`590`	`590`	`"execution_count": 4,`
`591`	`591`	`"outputs": [`
`592`	`592`	`{`
`593`	`593`	`"output_type": "stream",`
`594`	`594`	`"text": [`
`595`		`- "Probability Estimate: 0.0001\n"`
	`595`	`+ "Probability Estimate: 0.0823\n"`
`596`	`596`	`],`
`597`	`597`	`"name": "stdout"`
`598`	`598`	`}`
`@@ -2097,4 +2097,4 @@`
`2097`	`2097`	`]`
`2098`	`2098`	`}`
`2099`	`2099`	`]`
`2100`		`-}`
	`2100`	`+}`