Tuesday HW!

Tonight please complete the following in your textbook--this provides us with some essential practice with slope and y-intercept, as well as reading a computer output--all things we discussed today in class!

Page 189- 196: 13,  41acde, 47abce

Here's what you should be able to do after tonight's homework for this unit--if you can do all of this you're in good shape!

• Identify explanatory and response variables
• Create a scatter plot, find correlation (r), R^2, and write the equation of the line of best fit using your graphing calculator
• Understand correlation (r): what does it measure? what types of variables should we use? does it have units? what is strong/weak? 
• Describe an association (in context, of course)
• Interpret r = describe the strength and direction of an association
• Use the LSRL equation to make a prediction (substitute for x)
• Identify/consider possible lurking variables
• Read a computer output to identify r, R^2, slope, and y-intercept
• Interpret slope
• Interpret y-intercept

Tomorrow in class we'll continue with our chapter 8 notes--we'll learn add one more example of slope/y-intercept to our notes and we'll discuss how to interpret R^2. Then, we'll start to learn what "best fit means." We'll continue with these ideas on Thursday and Friday, aiming to finish chapter 8 by next Tuesday/Wednesday.

See you there!