Numerical C by Philip Joyce

Author:Philip Joyce
Language: eng
Format: epub
ISBN: 9781484250648
Publisher: Apress

}

printf("points are
");

for(i=0;i<points;i++)

{

printf("
");

printf("%f %f", xpoints[i], ypoints[i]);

}

printf("
");

fltcnt=(float)points;

/* Calculation of (xbar,ybar)- the mean points*/

/* and sxy and sxx from the formulas*/

xbar=sigmax/fltcnt;

ybar=sigmay/fltcnt;

sxy=(1/fltcnt)*sigmaxy-xbar*ybar;

sxx=(1/fltcnt)*sigmaxsquared-xbar*xbar;

/* calculation of b and a from the formulas */

b=sxy/sxx;

a=ybar-b*xbar;

/* Print the equation of the regression line */

printf("Equation of regression line y on x is
");

printf(" y=%f + %fx", a,b);

printf("
");

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