Analisa Kinerja Sistem - Blog Sivitas STIKOM Surabaya

Chapter 6.Membangun Model dengan Linear Regression% sigma xysigma_xy = sum(x.*y);% sigma xsigma_x = sum(x);% sigma x^2sigma_x2 = sum(x.^2);% sigma ysigma_y = sum(y);% sigma y^2sigma_y2 = sum(y.^2);% mean xmean_x = mean(x);% mean ymean_y = mean(y);% Regression parametersb1 = (sigma_xy - n*mean_x*mean_y)/(sigma_x2 - n*mean_x^2)b0=mean_y- b1*mean_x% estimationy_hat = b0 + b1*xsigma_y_hat = sum(y_hat)error = y - y_hatsigma_error = sum(error)83