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TABLE 15-5
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.
ANOVA
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 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 15-5, which of the following assumptions is most likely violated based on the residual plot of the residuals versus predicted Y?
Affective Forecasting
The process of predicting one's future emotional states or the emotional impact of future events.
Problem-solving Ability
The capacity to process information, analyze complicated situations, and come up with effective solutions.
Affect-as-information Hypothesis
The theory suggesting that individuals use their current emotions to infer attitudes and preferences under certain conditions.
Anticipated Emotions
The emotions people expect to feel due to future events or outcomes.
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