b-1.	Determine the correlation coefficient. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.)

X	Y			( )2	( )2	( )( )
9.0	8.1		1.192	0.007	1.420	0.099
7.0	6.0		-0.908	3.674	0.825	1.741
11.0	3.6	2.083		4.340	10.945	-6.892
12.0	4.0	3.083		9.507	8.458	-8.967
8.0	5.0	-0.917	-1.908		3.642	1.749
7.0	10.0	-1.917	3.092		9.558	-5.926
8.0	7.6	-0.917	0.692	0.840		-0.634
11.0	8.0	2.083	1.092	4.340		2.274
10.0	8.0	1.083	1.092	1.174	1.192
12.0	6.0	3.083	-0.908	9.507	0.825
6.0	8.6	-2.917	1.692	8.507	2.862	-4.934
6.0	8.0	-2.917	1.092	8.507	1.192	-3.184
107.000	82.900

=

=

sx

=

sy

=

r

=

b-2.	Determine the coefficient of determination. (Round your answer to 3 decimal places.)

c.	Interpret the correlation coefficient. Does it surprise you that the correlation coefficient is negative? (Round your answer to nearest whole number.)
	(Click to select)NoModerateStrong correlation between age of car and selling price. So, % of the variationin the selling price is explained by the variation in the age of the car.