The table shows a short excerpt from the \"car gallon of gas). The scatterplot i

Question

The table shows a short excerpt from the "car gallon of gas). The scatterplot is roughly linear and r-0.79.The regression equation is -4595-0000 weight and mileage" data file on the text CD. That fe lists severail 2004 model cars with automatic transmission and their x- weignt (in pounds) and y- mleage (mles per Automobile Brand Honda Accord Sedan LX Toyota Corolia Dodge Dakota Club Cab 628 Hummer (a) Find the predicted mileage and residual for a Hummer H2 Residual (b) Use this information in a sentence y- (2 decimal places (2 decimal places) The Hummer gets es/pation than one would predict %CErter n sumber between Oar d 100; 2 de inal pieces) of the variabaty in-Seed- can be explained by -Seles

Explanation / Answer

Solution:

mileage=45.795-0.0050(weight)

for hummer H2

weight=6370

predicted=45.795-0.0050(6370)

= 13.945

y^=13.95

Residual=actual-predicted=18-13.95=4.05

Residual=4.05

Solutionb:

the hummer gets 4.05 more than predicted

Solutionc:

r=-0..79

r sq=r*r=-0.79*-0.79

=0.6241

=0.6241*100=62.41%

62.41% of the variability can be explained by weight.

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