probability utilities

Assets/Test Assets/ProbabilityTest.cs

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+using EscapeRoomEngine.Engine.Runtime.Utilities;
+using JetBrains.Annotations;
+using MathNet.Numerics.Distributions;
+using NaughtyAttributes;
+using UnityEngine;
+
+namespace Test_Assets
+{
+    public class ProbabilityTest : MonoBehaviour
+    {
+        public NormalDistribution distribution = NormalDistribution.Standard;
+        public int steps = 24;
+        public int n = 1000000;
+        public double sample;
+
+        [Button]
+        [UsedImplicitly]
+        public void ShowDistribution()
+        {
+            var samples = Samples();
+
+            var step = 6f / steps;
+            for (var i = -3f; i < 3f; i += step)
+            {
+                var count = 0;
+                for (var j = 0; j < n; j++)
+                {
+                    var sample = samples[j];
+                    if (sample >= i && sample < i + step)
+                    {
+                        count++;
+                    }
+                }
+
+                var row = "";
+                for (var j = 0; j < 1000f*count/n; j++)
+                {
+                    row += "*";
+                }
+                Debug.Log(row);
+            }
+        }
+
+        [Button]
+        [UsedImplicitly]
+        public void CalculateMean()
+        {
+            Debug.Log(Probability.Mean(Samples()));
+        }
+
+        [Button]
+        [UsedImplicitly]
+        public void CalculateStandardDeviation()
+        {
+            Debug.Log(Probability.StandardDeviation(Samples()));
+        }
+
+        [Button]
+        [UsedImplicitly]
+        public void SamplePercentile()
+        {
+            Debug.Log(distribution.Cumulative(sample));
+        }
+
+        private double[] Samples()
+        {
+            var samples = new double[n];
+            for (var i = 0; i < n; i++)
+            {
+                samples[i] = distribution.Sample();
+            }
+            return samples;
+        }
+    }
+}