1 files changed, 32 insertions, 0 deletions
diff --git a/statserver/src/main/java/com/orbekk/stats/Analysis.java b/statserver/src/main/java/com/orbekk/stats/Analysis.java
new file mode 100644
index 0000000..a6d0271
--- /dev/null
+++ b/statserver/src/main/java/com/orbekk/stats/Analysis.java
@@ -0,0 +1,32 @@
+package com.orbekk.stats;
+
+import java.util.List;
+
+public class Analysis {
+    final List<Double> samples;
+    
+    public Analysis(List<Double> samples) {
+        this.samples = samples;
+    }
+    
+    public double getAverage() {
+        double sum = 0.0;
+        for (Double d : samples) {
+            sum += d;
+        }
+        return sum / samples.size();
+    }
+    
+    public double getVariance() {
+        double average = getAverage();
+        double sumDifferences = 0.0;
+        for (Double d : samples) {
+            sumDifferences += (d - average) * (d - average);
+        }
+        return sumDifferences / samples.size();
+    }
+    
+    public double getStandardDeviation() {
+        return Math.sqrt(getVariance());
+    }
+}