There really isn't anything surprising on the quiz...you may have noticed that most of the time you're asked the same questions...same thing happens tomorrow...
So, here's an outline of the quiz--I expect it to take about 3/4 of the period:
- Find the equation of the LSRL algebraically (this was like our protein vs. fat example in class, or #27d on page 192)
- Next, you're given a data set and asked all of the following--so make sure you know how to use your graphing calculator!
- Identify the explanatory and response variables
- Sketch a scatterplot using your calculator
- Sketch a residual plot using your calculator
- Determine if a linear model is appropriate
- Write the equation of the LSRL (using your calculator)
- Use your model to predict--(substitute for x)
- Find a residual (y - yhat)
- Interpret slope
- Interpret y-intercept
- Interpret R^2
A few more things...here's the link to the R^2 video we watched in class...—http://www.youtube.com/watch?v=IMjrEeeDB-Y
And here are the answers to the multiple choice we did in class...
No comments:
Post a Comment