2. Let y = a + b y ..... (1) where a and b are given by the normal equations

   S y = n a + b S x ..... (2)

   Sxy = a S x + b S x² .... (3)

   where ‘ n ’ be the number of pairs of values of x and y.

Equation (6) is the equation of the line of regression of y on x.

Index

6. 1 Introduction
6. 2 Correlation
6. 3 Types of Correlation
6. 4 Degrees of Correlation
6. 5 Methods of determining correlation
6. 6 Coefficients of Correlation for Bivariate Grouped Data
6. 7 Probable Error
6. 8 Rank Correlation Coefficient
6. 9 Linear Regression