You have been assigned the task of creating a multiple regression equation of at least three variables that explains Microsoft’s annual sales.
Consider using a time series of data of at least 10 years. You can search for this data using the Internet.
* Before running the regression, predict what sign each variable will be and explain why you make that prediction.
* After running the regression, interpret the regression.
* Does the regression fit the data well?
* Does each predictor play a significant role in explaining the significance of the regression?
* Are some predictors not useful?
* If so, did you consider removing those and rerunning the regression?
* Are the predictors related too significantly to one another?