![excel linear regression estimate excel linear regression estimate](https://i.ytimg.com/vi/cXiZ_t2NK1k/maxresdefault.jpg)
In the formulas shown below, n is the number of observations.
![excel linear regression estimate excel linear regression estimate](https://cdn.ablebits.com/_img-blog/regression/linear-regression.png)
![excel linear regression estimate excel linear regression estimate](https://engineerexcel.com/wp-content/uploads/2016/02/022316_2016_LinearRegre3.png)
Where the best model for a number of variables varying from p to q has been selected, the best model for each number or variables is displayed with the corresponding statistics and the best model for the criterion chosen is displayed in bold. For a stepwise selection, the statistics corresponding to the different steps are displayed.
EXCEL LINEAR REGRESSION ESTIMATE SERIES
The independence of the residuals can be checked by analyzing certain charts or by using the Durbin-Watson test (under Time Series menu). For this, you need to activate the respective test in the Test assumptions sub-tab. The normality of the residuals can be checked by analyzing certain charts or by running a Shapiro- Wilk test on the residuals. Use the various tests proposed in the results of linear regression to check retrospectively that the underlying hypotheses have been correctly verified. Validation of the hypothesis of linear regression The variables are then removed from the model following the procedure used for stepwise selection.
![excel linear regression estimate excel linear regression estimate](https://cdn.ilovefreesoftware.com/wp-content/uploads/2018/11/calculate_linear_regression_online-01-easycalculation.png)