Concept explainers
Tuition The following table shows the average annual tuition and fees at private and public 4-year colleges and universities for the school years 2009-2010 through 2014-2015. (Source: National Center for Education Statistics)
a. Using 1 for 2009-2010, 2 for 2010-2011, and so on, find the linear
b. Using I for 2009-2010. 2 for 2010-2011, and so on, find the linear correlation coefficient and the equation of the least-squares line for the tuition and fees at public 4-year colleges and universities, based on the year.
c. Based on the linear correlation coefficients you found in parts a and b, are the equations you wrote in parts a and b good models of the growth in tuition and fees at 4-year colleges and universities?
d. The equation of a least-squares line is written in the form
. Explain the meaning of the value of a for each equation you wrote in parts a and b.
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Chapter 13 Solutions
Mathematical Excursions (MindTap Course List)
- Elementary Linear Algebra (MindTap Course List)AlgebraISBN:9781305658004Author:Ron LarsonPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning