Math Problem Statement
Question content area top
Part 1
The total amount of consumer credit has been increasing steadily in recent years. The following table gives the total outstanding consumer credit (in billions of dollars). Answer parts (a) through (e) below.
Year
Consumer
Credit
Year
Consumer
Credit 20042004
2250.52250.5
20092009
2557.52557.5
20052005
2303.82303.8
20102010
2645.12645.1
20062006
2437.02437.0
20112011
2757.02757.0
20072007
2540.92540.9
20122012
2926.32926.3
20082008
2597.12597.1
20132013
3099.23099.2
Question content area bottom
Part 1
a.
Find an equation for the least squares line, letting x equal the number of years since
The equation is
Yequals=84.0584.05xplus+1896.991896.99.
(Use integers or decimals for any numbers in the equation. Round to two decimal places as needed.)
Part 2
b.
Based on the answer to part (a), at approximately what rate is consumer credit growing per year?
The consumer credit is growing about
$enter your response here
billion per year.
(Round to two decimal places as needed.)
Solution
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Math Problem Analysis
Mathematical Concepts
Regression Analysis
Linear Equations
Least Squares Method
Formulas
Least squares regression equation
Theorems
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Suitable Grade Level
Advanced High School / College