Restrict to 2 decimal places

I would appreciate advice as to how to limit the return from a calculation to 2 decimal places.

WTA

LRH

/*
     Java Class for calculating and comparing the range and average of figures input by the user  
*/

public class AverageRangeClass{
     private double sum, max, min;
     private int count;

     public class AverageRangeClass(){
          sum=0;
          count=0;
          max=0;
          min=0;
     }

     public void InputValue(double number){
           sum+=number;
           count++;
          if(count==1){
               max=number;
               min=number;
          }    
          else if(number > max)
          max=number;
               else if(number < min)
               min=number;
     }

     public double rangeToAverage(){
          return ((max-min)/(sum/count));

     }
     
}

/*
     Java program to check samples are
     maintained within a specified range,
     using KiloConv class, AverageRange class
*/

public class SampleCheck{
     public static void main(String arg[]){
          double kilograms;
          int stns, lbs, i, numToSample;

          KiloConvClass kcc = new KiloConvClass();
          AverageRangeClass arc = new AverageRangeClass();
          SampleRulesClass src = new SampleRulesClass();

          System.out.println("How many samples are there?\n");
               numToSample=Input.readInt();
          for(i=1; i<=numToSample; i++){
               
          System.out.print("Please enter stones weight:");
          stns = Input.readInt();
          System.out.print("Please enter pounds weight:");
          lbs = Input.readInt();

          kilograms = kcc.ConvToKilo(stns,lbs);

          arc.InputValue (kilograms);
     
System.out.println("\nRange to Average = "+arc.rangeToAverage());

          }
     }
}