- Please write all of your responses on separate paper.
- Complete the problem; time yourself--15 minutes.
- Then, use a different color ink to score your response--the rubric is attached...
- Score yourself E,P, or I for each part
- Then, write a couple notes about why you earned the score you did or what you would need to do to earn an "E"
- If you lost your papers the question is below and you can click here for the 2012 scoring guidelines/rubric (page 2-4)
2.) The "Outliers and Influential Points!" worksheet in the middle of the packet is not homework that will be checked on Monday, but it is an extra credit opportunity; read below and look the assignment over...
- This assignment challenges you to determine if a point is, in fact, influential...
- The only way to determine if a point influences slope, intercept, and/or correlation is to calculate these values WITH the point, and then WITHOUT the point--then compare the values
- This assignment walks you through this process-this hasn't been on the AP exam, so it's not a major concern for us--but look through the assignment to get an idea of how this is done.
- For the back you have to write a response determining if the point is/is not influential--try this structure...
- The point ____ is/is not influential because
- When the point is added/removed (it is essential that we comment on what we're doing, adding or removing the point)
- Describe the effects on correlation, slope, y-intercept (this is your support; always reference these values as support)
- You may complete the "Outliers and Influential Points!" worksheet for homework extra credit; this will only be accepted on Monday, and a key will be provided on Monday.
3.) START STUDYING FOR YOUR TEST WEDNESDAY! Here's an outline of what's on WEDNESDAY'S TEST:
- Wednesday = Vocab Matching, Short Answer, and 5 AP MC
- Thursday = AP MC and FR
- I will be after school on Monday to study for the test if you'd like!
- Here's the vocab list for Wednesday:
- Explanatory Variable
- Response Variable
- Outlier
- Leverage
- Influential Point
- Residual (graphically, how it's calculated, what it measures)
- Lurking Variable
- Predicted Value (y-hat)
- Slope
- Y-Intercept
- Coefficient of Determination (R^2)
- Correlation
- Least Squares Regression Line (LSRL)
- Re-express data (coming Monday)
- Scatterplot
- Residual Plot
- Overestimate
- Underestimate
- Extrapolation
- Interpolation
- Actual/Observed Value (y)
- Short Answer Section
- You are given a graph with points labeled A-E and asked which point has the highest/lowest leverage, highest/lowest residual, highest/lowest x or y value, etc.
- Multiple Choice Section
- Interpret slope
- Interpret y-intercept
- Interpret R^2
- Predict using a re-expressed model (covered in class Monday/Tuesday)
- Determine how a point will influence r, slope, y-int (like Thursday's classwork)
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