Field might as well be private, as there's a public getter

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1296545 13f79535-47bb-0310-9956-ffa450edef68

src/main/java/org/apache/commons/math3/stat/descriptive/DescriptiveStatistics.java

@@ -79,7 +79,7 @@ public class DescriptiveStatistics implements StatisticalSummary, Serializable {
     /**
      *  Stored data values
      */
-    protected ResizableDoubleArray eDA = new ResizableDoubleArray();
+    private ResizableDoubleArray eDA = new ResizableDoubleArray();
 
     /** Mean statistic implementation - can be reset by setter. */
     private UnivariateStatistic meanImpl = new Mean();