# x 27 42 31 47 23 40 34

 x y 27 42 31 47 23 40 34 52 32 19 26 13 29 17 21 14

given Σx = 296, Σy = 171, Σx2 = 11,652, Σy2 = 3997, Σxy = 5868, and

r ≈ −0.9383

x=
y=
ŷ=

Find the value of the coefficient of determination r2. What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line? What percentage is unexplained? (Round your answer for r2 to four decimal places. Round your answers for the percentages to two decimal place.)
r2=
explained= %
unexplained= %

Suppose a car weighs x = 37 (hundred pounds). What does the least-squares line forecast for y = miles per gallon? (Round your answer to two decimal places.)
mpg

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