0 Regresi Linier Sederhana

#include

#include

#include

void main(){

int jumlah_data;

float jmlh_x,jmlh_y;

float jmlh_xy,jmlh_x2,jmlh_y2;

float rata_x,rata_y,a,b;

double r,r2;

int data_x[100], data_y[100];

jmlh_x=0; jmlh_y=0; jmlh_xy=0;

jmlh_x2=0; jmlh_y2=0;

cout<<"Masukkan jumlah data yang ingin Anda inputkan : ";

cin>>jumlah_data;

for(int i=0;i

cout<<"x ke [ "<<<" ] : ";cin>>data_x[i];

cout<<"y ke [ "<<<" ] : ";cin>>data_y[i];

}

clrscr();

cout<<"====================================";

cout<<"\ndata x \tdata y \tjmlh x \tjmlh y \tjmlh x2”;

cout<<” \tjmlh y2 \tjmlhxy";

for(int j=0;j

jmlh_x=jmlh_x+data_x[j];

jmlh_y=jmlh_y+data_y[j];

jmlh_xy=jmlh_xy+(data_x[j]*data_y[j]);

jmlh_x2=jmlh_x2+(data_x[j]*data_x[j]);

jmlh_y2=jmlh_y2+(data_y[j]* data_y[j]);

cout<<"\n"<<<"\t"<<<"\t"<<<"\t"<<<"\t"<<<"\t\t"<<<"\t\t"<<<"\n============================\n";

rata_x=jmlh_x/jumlah_data; rata_y=jmlh_y/jumlah_data;

b=(jumlah_data*jmlh_xy-(jmlh_x*jmlh_y))/(jumlah_data*jmlh_x2-(jmlh_x*jmlh_x));

a=rata_y-(rata_x*b);

r=(jumlah_data*jmlh_xy-(jmlh_x*jmlh_y))/((pow((jumlah_data*jmlh_x2-(jmlh_x*jmlh_x)),0.5)) *(pow((jumlah_data*jmlh_y2-(jmlh_y*jmlh_y)),0.5)));

r2=r*r;

cout<<"\n PERSAMAAN REGRESI LINIER";

cout<<" \n y = "<<<" + "<<<"x";

cout<<"\n nilai r: "<

cout<<"\n nilai r^2 : "<

getch();

}