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TABLE 17-9
What are the factors that determine the acceleration time (in sec.) from 0 to 60 miles per hour of a car? Data on the following variables for 171 different vehicle models were collected:
Accel Time: Acceleration time in sec.
Cargo Vol: Cargo volume in cu.ft.
HP: Horsepower
MPG: Miles per gallon
SUV: 1 if the vehicle model is an SUV with Coupe as the base when SUV and Sedan are both 0
Sedan: 1 if the vehicle model is a sedan with Coupe as the base when SUV and Sedan are both 0
The regression results using acceleration time as the dependent variable and the remaining variables as the independent variables are presented below. The various residual plots are as shown below.
The coefficient of partial determination (
) of each of the 5 predictors are,respectively,0.0380,0.4376,0.0248,0.0188,and 0.0312.
The coefficient of multiple determination for the regression model using each of the 5 variables Xj as the dependent variable and all other X variables as independent variables ( ) are,respectively,0.7461,0.5676,0.6764,0.8582,0.6632.
-Referring to Table 17-9,which of the following assumptions is most likely violated based on the residual plot of the residuals versus predicted Y?
Sperm Cheaply
Refers to the biological concept that producing sperm involves lower physiological cost compared to egg production, affecting reproductive strategies.
Fertilize Many Females
A reproductive strategy used by some males in a species to increase their chances of passing on their genes by mating with multiple females.
Polyandry
A mating system where females mate (or attempt to mate) with multiple males.
Polygyny
A mating system where a male mates with multiple females within one breeding season, commonly observed in animals.
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