Курсовая работа: Система обработки научных данных

float varx = sqrt(sum5/n);

float vary = sqrt(sum6/n);

float coeff = ((cov/varx)/vary);

cout<<" THE COEFFICIENT OF CORRELATION = "<<coeff<<endl<<endl;

if(coeff<=1 && coeff>= -1)

{

if(coeff == -1)

cout<<" There is perfect negative correlation between X and Y\n";

else if(coeff ==1)

cout<<"There is perfect positive correlation between X and Y\n";

else if(coeff ==0)

cout<<" There is no correlation between X and Y\n";

else if (coeff<0)

cout<<" There is negative correlation between X and Y\n";

else if (coeff>0)

cout<<"There is positive correlation between X and Y\n";

}

else

cout<<"There seems to be a mistake in the data provided since the value of coefficient of correlation does not lie between -1 and 1";

break;

}

default:

{ outtextxy(30,midy +100," Sorry, you have entered the wrong choice");

getch();

cleardevice();

corre();

break;

}

}