Chapter 4: Q.1 (page 192)
1. For a linear equationIdentify the
a. independent variable.
b. dependent variable.
c. slope.
d. y-intercept.
Short Answer
(a) is thus an independent variable.
(b)is thus a dependent variable.
(c) slope
(d)
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Chapter 4: Q.1 (page 192)
1. For a linear equationIdentify the
a. independent variable.
b. dependent variable.
c. slope.
d. y-intercept.
(a) is thus an independent variable.
(b)is thus a dependent variable.
(c) slope
(d)
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A value of close to -----suggests at most a weak linear relationship between the variables.
Corvette Prices. In Exercise 4.59. you determined a regression equation that can be used to predict the price of a Corvette, given its age.
a. Should that regression equation be used to predict the price of a 4-year-old Corvette? a 10-year-old Corvette? Explain your answers.
b. For which ages is the use of the regression equation to predict price reasonable?
For each exercise, determine the linear correlation coefficient by using
a. Define on page ,
b. Formula an page .
Compare your answer an para (a) and (b

If tends to increase linearly as increases, the variables are------ linearly correlated.
(a) Plot the data points and the first linear equation on one graph and the data points and the second linear equation on another.
(b) Construct tables for
(c) Determine which line fits the data points better according to the least-square criterion.

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