12. Write out the model for simple linear regression for a single observation.
13. For simple linear regression, write out the formula for the predicted y for a single observation.
14. For simple linear regression, write out the formula for the residual for a single observation.
15. What is another name for the residual?
16. Write out the GLM (General Linear Model) versions of:
17. In regression, estimation and tests are only as good as the __________________.
18. True or false. The intercept variable must be included in any regression model.
19. What is the general matrix formula for the parameter (beta) estimates?
20. When we use the Least Squares method for parameter estimation, after setting up the parameter equations, taking the partial derivatives, and setting them equal to zero, the equations we have derived are called the ______________ equations.
21. What do we need to calculate in order to evaluate model adequacy graphically?
22. What can you do if you have replications in a regression study that you can't do without them?
23. What is the common interpretation of R2?