Chapter 4.4, Problem 28SBE

Round all answers to two decimal places.

Linear or Exponential? In Exercises S-25 through S-28, a data set is given. In parts a and b, round regression parameters to two decimal places.

a. Use linear regression to find a linear fit for the data. Plot the data with the linear model.

b. Use exponential regression to find an exponential fit for the data. Plot the data with the exponential model.

c. Based on the graphs you have made, which model do you think is a better fit for the data.

$x$	$1$	$3$	$4$	$5$	$8$	$9$
$y$	$363.8$	$178.4$	$124.9$	$87.4$	$29.9$	$21.1$