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Oct 15th, 2019
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  1. import java.util.Scanner;
  2.  
  3. class assignment8D
  4. {
  5. public static Scanner input = new Scanner (System.in);
  6. public static void main ( String[ ] args)
  7.  
  8. {
  9. //Use a loop to input 5 numbers and find the sum:
  10. int i,sum=0,number=0,mean=0,j,sum2 = 0,mean2 = 0;
  11. double average=0;
  12. int Grades [][] = new int [10][3];
  13. int go=1;
  14. while (go==1)
  15. {
  16.  
  17. System.out.println("how many numbers do you want to input can't be over 10");
  18. number=input.nextInt();
  19. for ( i = 0; i < number;i++)
  20. {
  21.  
  22. System.out.println("Type in a number");
  23. Grades[i][0]=input.nextInt();
  24. sum=sum+Grades[i][0];
  25.  
  26.  
  27. }
  28. mean=sum/number;
  29. for ( i = 0; i < number;i++)
  30. {
  31. Grades[i][1]=Grades[i][0]-mean;
  32. Grades[i][2]=Grades[i][1]*Grades[i][1];
  33. sum2= sum2+Grades[i][2];
  34.  
  35. }
  36. mean2 = sum2/number;
  37. average=Math.sqrt(mean2);
  38. for ( i = 0; i < number;i++)
  39. {
  40. for ( j = 0; j< 3;j++)
  41. {
  42. System.out.print(Grades[i][j]+" ");
  43. }
  44. System.out.println();
  45. }
  46. System.out.println(mean2);
  47. System.out.println(average);
  48. }
  49. go=0;
  50. }
  51. }
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