Project #26750 - Statistics

The least-squares regression line is a model that describes the relationship between two variables. Now that you have read about regressions and hypothesis tests, you will collect data to create a least-squares regression to interpret.

Please complete the following activity. You will need a ruler or tape measure. Once you complete the questions, post your answers to the class discussion and compare your answers with your classmates. Did everyone get the same measurements and model? Explain your answers.

  • Use the ruler to measure the thickness of a single page of the text. Which unit of measurement did you use and why?
  • Grouping the pages (one page is one sheet), complete the following table:

     

No. of pgs.

25

50

75

150

200

225

Thickness

 

 

 

 

 

 

 

  • Compute the least-squares regression line for your data.
  • Use your model to estimate the thickness of a single page of the text by letting x=1. Is the value you obtained reasonable?
  • Use your model to estimate the thickness of a single page of the text by interpreting the slope. Is the value you obtained reasonable?

 

  • What, if anything, could you do to improve the model?

Subject Mathematics
Due By (Pacific Time) 04/05/2014 01:00 pm
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