How to use regression equations for estimation and prediction

Estimation and prediction using regression equations by doing experiments drawing scatter plots. The formula for the linear regression equation is b=(x1y1+x2y2+... .xnyn-nXY)/(x1+x2+... . xn-nX). Linear regression equations are one of the statistical analysis methods that utilize regression analysis in mathematical statistics to determine interdependent quantitative relationships between two or more variables.