Month
Closing Price
September, 2009
$5.24
October, 2009
$4.10
November, 2009
$4.02
December, 2009
$3.27
January, 2010
$2.74
February, 2010
$2.89
March, 2010
$3.19
April, 2010
$3.01
May, 2010
$2.52
June, 2010
$2.38
She is trying to come up with a model that will predict the closing monthly price of
GIGM for June, 2011, and she has decided to try both linear regression and
exponential regression. Work along with Anita by answering the following
questions. When doing the regressions, assume that September, 2009 is month
1, October, 2009 is month 2, and so on. (5 points: Part I - 1 point; Part II - 1 point;
Part III - 1 point; Part IV - 1 point; Part V - 1 point)
Part I: What is the linear regression equation produced by your graphing
calculator? What is the value of r?
What is the linear regression equation produced by your graphing? What is the value of r