lib/basic/stats.rb in basic-stats-0.0.1 vs lib/basic/stats.rb in basic-stats-0.0.2

@@ -8,9 +8,15 @@
 
     def mean
       self.sum/self.length.to_f
     end
 
+    def median
+      sorted = self.sort
+      len = sorted.length
+      return (sorted[(len - 1) / 2] + sorted[len / 2]) / 2.0
+    end
+
     def sample_variance
       m = self.mean
       sum = self.inject(0){|accum, i| accum +(i-m)**2 }
       sum/(self.length - 1).to_f
     end