MATH 225N Week 8 Assignment; Correlation Questions-Answers 1

  • MATH 225N Week 8 Assignment; Correlation Questions-Answers 1
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Institution MATH 225N Statistical Reasoning for the Health Sciences
Contributor Gbenga
  1. Question: A scientific study on gerbil population growth results in the data below….  The least squares regression line modeling this data is given by yˆ=13.3+5.567x. What is the slope of the regression line? Round your answer to three decimal places.
  2. Question: The scatter plot below shows data for the average cost of a high-end computer (y, in dollars) in the year x years since 2000. The least squares regression line is given by yˆ=−1677+314x….. A plot of time versus the price of a best-selling model of television has horizontal units of years since 2000 and vertical units of dollars. The best fit line of the data are defined by the equation y=−75x+550, where x=year and y=price……  What are the units of the slope?
  3. Question: Which of the following data sets or plots could have a regression line with a negative slope? Select all that apply.
  4. Question: Which of the following data sets or plots could have a regression line with a negative y-intercept?

 

Instituition / Term
Term Fall 2020
Institution MATH 225N Statistical Reasoning for the Health Sciences
Contributor Gbenga
 

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