Solution :
X | Y | XY | X^2 | Y^2 |
1 | 9 | 9 | 1 | 81 |
3 | 10 | 30 | 9 | 100 |
6 | 15 | 90 | 36 | 225 |
7 | 17 | 119 | 49 | 289 |
8 | 19 | 152 | 64 | 361 |
n | 5 |
sum(XY) | 400.00 |
sum(X) | 25.00 |
sum(Y) | 70.00 |
sum(X^2) | 159.00 |
sum(Y^2) | 1056.00 |
Numerator | 250.00 |
Denominator | 254.17 |
r | 0.9836 |
r square | 0.9675 |
The coefficient of determination r2 ,
r = 0.9836
r2 = 0.9675
Answer : The coefficient of determination r2 is 0.9675
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