
How do we use linear regression model for predicting the future response variable.

When should I transform the X variable in the model and also when should I transform the Y variable in the model. What type of transformation can I do so that my parameters are linear.

If I do any transformation randomly on X variable how does the software R or any other satatistical software recognise these. I can transform data and provide it to any one without letting them know. What should I consider before transforming any variable.

Which considering the model to be BLUE what consideration should I make before transforming and How the transformation thing works.