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Past Exam for MATH 112 - Statistics In Daily Life with Beardsley at Northeastern Illinois University (NEIU)

Exam Information

Material Type:Exam 2
Professor:Beardsley
Class:MATH 112 - Statistics In Daily Life
Subject:Mathematics
University:Northeastern Illinois University
Term:--
Keywords:
  • Immediately
  • Alarm Clock
  • Scatter Plot
  • Relationship
  • Average Number
  • No Correlation
  • You Have...
  • This Morning
  • In the Morning
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MATH112 Demo Exam #2, Chapters 7-11 No Books, No Notes, No Friends. You have 1 hour to complete the exam. Show all work for maximum credit. A 3x5 handwritten note card is allowed. Assume the following data is for problems 1 - 3: Data relating the price of cats to the price of mice (all data is fictional) Price of Cats Price of Mice $50 50c $40 35c $35 33c $55 53c $45 47c 1) Determine the above data’s correlation. How strong is it? 2) Plot the data on a scatter plot and determine if the relationship is remotely linear (Why? Why not?) Anything special to note about the data? 3) Find the linear regression of the above data if applicable. If it is not applicable, describe why not. Assume the following data is for problems 4 - 6: Data relating the average hours of sleep each night to the approximate annual income (all data is fictional) Hours of sleep Annual Income 7 40,000 7 70,000 8 50,000 10 0 9 40,000 4) Determine the above data’s correlation. How strong is it? 5) Plot t...

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