Use the preparation materials to prepare hand-written answers for the following questions. Please ask any questions on the "Questions -- Preparation Guide" on the course Team (see link on the homepage).
- What are the five assumptions of a SLR?
- What are the five most common transformations (by name and by power value)?
- Which of those five transformations is the transformation that you should try first and that you hope works (relative to the other transformations)? Why?
- What transformation “linearizes” a power function relationship?
- How can you use the results on the transformed scale to estimate the $a$ and $b$ parameters of a power function?
- What transformation “linearizes” an exponential function relationship?
- How can you use the results on the transformed scale to estimate the $a$ and $b$ parameters of an exponential function?
- What R function is used to perform the trial-and-error method of finding a power transformation in SLR?
- For which transformations is it possible to get an interpretable value after back-transforming a y-intercept, fitted value, or predicted value?
- For which transformations is it possible to get an interpretable value after back-transforming a slope?
- What is the interpretation of the slope when only the response variable was transformed?
- What is the interpretation of a back-transformed slope when only the response variable was transformed?
- What is the interpretation of the slope when both the response and explanatory variables were transformed?
- What is the interpretation of a back-transformed slope when both the response and explanatory variables were transformed?
- [Optional] What questions do you have from this reading that you would like me to address? [Please be as specific as possible. Don't just say "everything" or "I don't understand anything." Of course, you can ask me questions about the reading before class on MS Teams.]