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The Java Embedded Aggregator Class DevAggregate

DevAggregate implements the standard deviation aggregation by extending class VarAggregate.

For an overview see page Java Aggregator Class

Class Definition

 
    public static class DevAggregate extends VarAggregate
    {
        public Object result() 
        {
            return new Double(Math.sqrt((sum2 - sum*sum/count)/count));
        }
    }