As I have done in the past, when I am trying to fill in some details, I will upload some images and comment on them as they relate to the work of the past week.
Here are some other images of our presenters. The students have known about this assignment for, at least, 8 weeks. Some of the students are not prepared to present (and I am not talking about the people who forgot their books or needed one more day to get ready).
Here is another item I received in the mail today. It is a Real Estate report for my area. It makes reference to the Mean and Mean (Average).
Column A of worksheet on calculating Averages (the Mean)