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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,what is the correct interpretation for the estimated coefficient for Sedan?
Egocentrism
A developmental stage where an individual is unable to differentiate between their own perspective and that of others, often seen in children.
Concrete Operational Thinking
A stage of cognitive development in children, as identified by Piaget, where individuals can think logically about concrete events and understand the concept of conservation.
Pubertal Growth Spurt
A rapid increase in height and weight during puberty, resulting from accelerated bone growth.
Temperament
An individual's inherent personality traits, including mood, emotionality, and behavior tendencies, often observable in infancy.
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