The graded activity that was given on Friday will in fact not be graded. It seemed as if things were 50-50 as far as understanding goes, so I wanted to investigate to see just where the understanding level of the entire class was.
I can't stress enough that you need to use all resources available to you. Do the readings. Do the homework by putting a strong effort into it. Look online for alternative explanations. Something as simple as Googling "linear regression" can provide a great deal of sites with a lot of information.
Chapter 7 and 8 need to go together, and over the next day or two I want us to understand them together. We will spend a lot of time Monday doing some error correction with some past assignments (Ch. 7 Quiz and the AP Questions).
You're learning something when you're uncomfortable and feel like you don't totally understand.