b) Use the least-squares regression method to derive a forecasting equation.
c) What is your estimate for bass drum sales if the Stone Temple Pilots
performed on TV nine times last month?
d) What are the correlation coefficient (r) and the coefficient of determination
(r2) for this model, and what do they mean?
4.46 Thirteen students entered the business program at Hillcrest College 2 years ago.
The following table indicates what each student scored on the high school SAT math
exam and their grade-point averages (GPAs) after students were in the Hillcrest
program for 2 years.
Student
A
B
C
D
E
F
G
H
I
J
K
L
M
SAT Score
421
377
585
690
608
390
415
481
729
501
613
709
366
GPA
2.90
2.93
3.00
3.45
3.66
2.88
2.15
2.53
3.22
1.99
2.75
3.90
1.60
a) Is there a meaningful relationship between SAT math scores and grades?
b) If a student scores a 350, what do you think his or her GPA will be?
c) What about a student who scores 800?