SOLUTION: The table shows the sales represented by S in millions, for jogging shows from 1998 - 2004: 1998 1469 1999 1502 2000 1638 2001 1670 2002 1733 2003 1802 2004 1838

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Question 1055174: The table shows the sales represented by S in millions, for jogging shows from
1998 - 2004:
1998 1469
1999 1502
2000 1638
2001 1670
2002 1733
2003 1802
2004 1838
Find the coefficient of determination for the linear model. Round to four decimal places.
A.) 0.9869
B.) 0.9807
C.) 0.9903
D.) 0.9741
Answer by Edwin McCravy(20056)   (Show Source): You can put this solution on YOUR website!

1998  1469
1999  1502
2000  1638
2001  1670
2002  1733
2003  1802
2004  1838 

On your TI-83 or TI-84 graphing calculator:

Press STAT
Press ENTER
Enter 1,2,3,4,5,6,7, in L1 and 1469,1502,etc.,1838 in L2.

Press STAT
Highlight CALC
Scroll down to LinReg(
Press ENTER several times until you see

y=ax+b
a=64.35714286
b=1407.142857
r2=.9740622353
r=.986945914

One of the choices has this bottom value of r
[not r2] rounded to 4 decimals.

Edwin
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