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what is general regression equation. That trend growing three inches a year can be modeled with a regression equation. The slope of the line is b and a is the intercept the value of y when x 0.
Linear Regression Equation Formula And Properties from byjus.com
Y ab b. Y b x a beginaligned y bx a endaligned y b x a. The least squares parameter estimates are obtained from normal equations.
For example if you measure a childs height every year you might find that they grow about 3 inches a year.
The linear regression equation can now be expressed as. In the more general multiple regression model there are independent variables. Regression Equation y a bx Slope b NSXY - SX SY NSX 2 - SX 2 Intercept a SY - b SX N Where x and y are the variables. A regression line or a line of best fit can be drawn on a scatter plot and used to predict outcomes for the x and y variables in a given data set or sample data.
