# The table gives the number of songs purchased from My Tunes at different prices per song. a. Find the equation of the linear regression line. Round the slope and the y-intercept to the nearest hundredth. b. What is the slope of the linear regression line? c. What are the units of the slope when it is expressed as a rate?

Chapter 1, Application 1.5 #12

The table gives the number of songs purchased from My Tunes at different prices per song.

a. Find the equation of the linear regression line. Round the slope and the y-intercept to the nearest hundredth.

b. What is the slope of the linear regression line?

c. What are the units of the slope when it is expressed as a rate?

d. Based on the linear regression line, how many thousands of downloads would My Tunes expect if the price were changed to $0.45? Round to the nearest integer.

e. Is your answer to part d interpolation or extrapolation? Explain.

f. Find the correlation coefficient to the nearest hundredth.

g. Describe the correlation.

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**Related Book For**

## Financial Algebra Advanced Algebra With Financial Applications

2nd Edition

**Authors:** Robert Gerver, Richard J. Sgroi

**ISBN:** 9781337271790