Assignment-01d

 

 

 

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Writing a Java application

For ideas how to solve this problem, study the programs in directory Java/examples-appl/, especially the applications SumArray.java and Average.java

  1. Write a Java application (not an applet) that computes the mean and standard deviation of the following array of data:
      double[] x = { 148.00, 125.25,  88.50, 133.25,  95.00,
                     104.50, 135.00, 108.25, 122.50, 107.25,
                     137.00, 114.00, 124.50, 118.00, 119.00,
                     117.25,  93.25, 115.00, 116.50,  99.50,
                     106.00, 103.75, 115.25, 128.50, 105.00  };         
  2. Output the following lines on standard output:
      The mean is                XXX.XX
      The standard deviation is   XX.XX         
  3. Call the mean "mu" and the standard deviation "sd". Use the following formulas: where n is the length of the array x .

  4. Compute n using the length attribute of the array x .
  5. Put a link to your Java source file on your CSC 499 homework page.
  6. Extra Credit: Compute the range of the data, that is, the minimum and the maximum values of x .