C++ PROGRAMS FOR MECHANICAL
Find the correlation co-efficient, correlation and fitted line. #include <stdio.h> #include <math.h> main() { int n, i; float y, x, Sx, Sy, SSx, SSy, Sxy, corr, a, b; printf(" Number of observations ( Pairwise ) "); scanf("%d", &n); printf("\n Enter the values pair-wise\n"); Sx = 0; Sy = 0; SSx = 0; SSy = 0; Sxy = 0; for ( i = 1; i <=n; i++ ) { scanf("%f%f", &y, &x); Sx = Sx + x; Sy = Sy + y; SSx = SSx + x*x; SSy = SSy + y*y; Sxy = Sxy + x*y; } printf(" The sum of x is %f\n", Sx); printf(" The sum of y is %f\n", Sy); printf(" The sum of x^2 is %f\n", SSx); printf(" The sum of y^2 is %f\n", SSy); printf(" The sum of xy is %f\n", Sxy); corr = (n*Sxy-Sx*Sy)/sqrt((n*SSx-Sx*Sx)*(n*SSy-Sy*Sy)); b = (n*Sxy-Sx*Sy)/(n*SSx-Sx*Sx); a = (Sy - b*Sx)/n; printf("\n The correlation coefficient, a = %f and b = %f\n The cor...