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Re-Expression con’t

Re-Expression con’t. Chapter 10 Day 3 AP Statistics. Warm Up. Penicillin Assimilation Straighten these data using re-expression Use your model to estimate the concentration of penicillin after 8 hours. More Practice Problems!. Brakes. Explain why the linear model is not appropriate.

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Re-Expression con’t

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  1. Re-Expression con’t Chapter 10 Day 3 AP Statistics

  2. Warm Up Penicillin Assimilation Straighten these data using re-expression Use your model to estimate the concentration of penicillin after 8 hours

  3. More Practice Problems!

  4. Brakes Explain why the linear model is not appropriate. Re-express the data to straighten the scatterplot and give the re-expressed model. Estimate stopping distance for a car traveling 55mph.

  5. World Population Model (Scale the years) Use your model to predict population for 2005.

  6. What have we learned? • Recognize when a well-chosen re-expression may help you improve and simplify your analysis • Understand the value of re-expression to improve symmetry, to make scatter about the line more constant, and to make a plot more linear • Recognize that when a pattern indicates that no re-expression can improve the structure of the data

  7. What have we learned? • Know how to re-express you data and how to use the calculator • Be able to reverse any common re-expressions to put a predicted value or residual back into the original units

  8. What have we learned? • Be able to describe a summary or display of a re-expressed variable making clear how it was re-expressed and giving its re-expressed units. • Be able to describe a regression model fit to re-expressed data in terms of the re-expressed variables

  9. ClassworkBook Page 243 # 29

  10. Homework Page 241 # 24, 28, 30

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