Write a program to read an array of numbers and evaluate and display its mean, variant and deviant

   1:  #include<stdio.h>

   2:  #include<conio.h>

   3:  #include<math.h>

   4:  void main()

   5:  {

   6:  float x[50];

   7:  int n,i;

   8:  float sumx=0,sumx2=0;

   9:  float var,mean,sd;

  10:  printf("Number of elements in an array:");

  11:  scanf("%d",&n);

  12:  printf("\nEnter the elements:\n");

  13:  for(i=0;i<n;i++)

  14:  {

  15:  scanf("%f",&x[i]);

  16:  sumx=sumx+x[i];

  17:  sumx2=sumx2=x[i]*x[i];

  18:  }

  19:  mean=sumx/n;

  20:  var=1.0/n*(sumx2-(mean*mean));

  21:  sd=sqrt(var);

  22:  printf("\nThe array is:\n");

  23:  for(i=0;i<n;i++)

  24:  printf("%.2f ",x[i]);

  25:  printf("\nIts mean = %.2f \nvariant = %.2f\nStd deviation =%.2f\n",mean,var,sd);

  26:  getch();

  27:  }