Complete Guide to Regression & Correlation | NEB Grade 12 Business Math
Section 1: Introduction to Regression and Correlation What is Regression? The literal meaning of the term 'regression' is moving backward or returning to the average value[cite: 534]. Originally developed by Sir Francis Galton to study the heights of fathers and sons, regression analysis is now a mathematical measure of the average relationship between two or more variables[cite: 535, 538]. It is primarily considered as a device used to predict the value of one variable when the value of the other variable is known[cite: 8, 537]. Types of Regression The analysis which is restricted to studying only two variables at a time is known as a simple linear regression analysis[cite: 10, 539]. Within this, there are always two lines of regression[cite: 555]: Regression line of Y on X: Used to estimate the dependent variable Y for any given value of the independent variable X[cite: 556]. Regression line of X on Y: Used to estimate the depe...