I am computingr^2for a set of data. Here is a snippet of code:I keep getting $\displaystyle r^2 = 1.00000 $. However when I change it to $\displaystyle *r2 = 1- (1.0)/(2.0) $ I get $\displaystyle *r2 = 0.5 $. So for some reason $\displaystyle (syy/sdy) = 0 $. Why? How do I change this? I declared all the important variables as float. I also did $\displaystyle 1.0/(\text{ndata}-1) $ and it did not work.Code:for (i=1;i<=ndata;i++) { *chi2 += SQR(y[i]-(*a)-(*b)*x[i]); syy += 1/(ndata-1)*(*chi2); sdy += 1/(ndata-1)*SQR((y[i]-yavg)); *r2 = 1-(syy/sdy); sigdat=sqrt((*chi2)/(ndata-2)); *siga *= sigdat; *sigb *= sigdat; } } }