A regression model between sales (y in $1000), unit price (x1 in
dollars), and television advertisement (x2 in dollars) resulted in
the following function:
ŷ = 7  3x_{1} + 5x_{2}
For this model, SSR = 3500, SSE = 1500, and the sample size is
18. The adjusted Rsquared or adjusted coefficient of determination
for this problem is
0.7 

0.66 

0.825 

0.66 
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