Regression Formula Statistics. Ch 12 3 the regression equation. Y a bx ϵ.
The formula for the best fitting line or regression line is y mx b where m is the slope of the line and b is the y intercept. Regression focuses on a set of random variables and tries to explain and analyze the mathematical connection between those variables. Match pairs sample can be used to find the equation of the best fit line also known as linear regression line or least squares line.
In fact most things in the real world from gas prices to hurricanes can be modeled with some kind of equation.
The slope of the line is b and a is the intercept the value of y when x 0. That trend growing three inches a year can be modeled with a regression equation. B 4 88 20 17 4 141 20 2 b 0 09. B the slope of the regression line a the intercept point of the regression line and the y axis.
