#include
void main()
{
int xi[7];
float yi[7];
double xiyi;
int xi2;
int x;
int sigma_xi;
double xi_rata2;
double sigma_yi;
double yi_rata2;
double sigmaxiyi;
double sigma_xi2;
double a1;
double a0;
int n=7;
double hasil1;
double hasil2;
xi[0]=2;
xi[1]=1;
xi[2]=4;
xi[3]=2;
xi[4]=5;
xi[5]=6;
xi[6]=11;
yi[0]=2.7;
yi[1]=23.4;
yi[2]=23.1;
yi[3]=14.3;
yi[4]=35.0;
yi[5]=26.1;
yi[6]=45.5;

;

cout<
cout<<"x dan y adalah"<
cout<

for (x=0;x<=6;x++)
{
cout<<"xi = "<<
}
cout<
sigma_xi = xi[0]+xi[1]+xi[2]+xi[3]+xi[4]+xi[5]+xi[6];
cout<<"sigma x = "<<
cout<
xi_rata2= sigma_xi/n;
cout<<"x rata2 = "<<
cout<

for (x=0;x<=6;x++)
{
cout<<"y = "<<
}
cout<
sigma_yi = yi[0]+yi[1]+yi[2]+yi[3]+yi[4]+yi[5]+yi[6];
cout<<"sigma y = "<<
cout<
yi_rata2= sigma_yi/n;
cout<<"y rata2 = "<<

cout<<"nilai x.y"<
cout<
for (x=0;x<=6;x++)
{
xiyi=xi[x]*yi[x];
cout<<"x.y ="<<
}
cout<
cout<<"nilai sigma x.y"<
cout<
sigmaxiyi = xi[0]*yi[0]+xi[1]*yi[1]+xi[2]*yi[2]+xi[3]*yi[3]
+xi[4]*yi[4]+xi[5]*yi[5]+xi[6]*yi[6];
cout<<"sigma x.y ="<<

cout<<"nilai x kuadrat"<
cout<
for (x=0;x<=6;x++)
{
xi2=xi[x]*xi[x];
cout<<"x2 ="<<
}

cout<<"nilai sigma x kuadrat"<
cout<
sigma_xi2 = xi[0]*xi[0]+xi[1]*xi[1]+xi[2]*xi[2]+xi[3]*xi[3]
+xi[4]*xi[4]+xi[5]*xi[5]+xi[6]*xi[6];
cout<<"sigma xy = "<<

a1= ((n*sigmaxiyi)-(sigma_xi*sigma_yi))
/((n*sigma_xi2)-(sigma_xi*sigma_xi));
cout<< "nilai a1"<
cout<
cout<<"a1 = "<<

a0= (yi_rata2)-(a1*xi_rata2);
cout<<"nilai a0 adalah"<
cout<
cout<<"a0 = "<<





}