Multiple Choice
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 MPG?
A) As the miles per gallon decreases by one unit,the mean 0 to 60 miles per hour acceleration time will increase by an estimated 0.0620 seconds without taking into consideration all the other independent variables included in the model.
B) As the 0 to 60 miles per hour acceleration time decreases by one second,the mean miles per gallon will increase by an estimated 0.0620 unit without taking into consideration all the other independent variables included in the model.
C) As the miles per gallon decreases by one unit,the mean 0 to 60 miles per hour acceleration time will increase by an estimated 0.0620 seconds taking into consideration all the other independent variables included in the model.
D) As the 0 to 60 miles per hour acceleration time decreases by one second,the mean miles per gallon will increase by an estimated 0.0620 unit taking into consideration all the other independent variables included in the model.
Correct Answer:

Verified
Correct Answer:
Verified
Q20: Every spring semester, the School of Business
Q120: TABLE 17-3<br>A financial analyst wanted to examine
Q121: TABLE 17-8<br>The superintendent of a school district
Q122: TABLE 17-3<br>A financial analyst wanted to examine
Q123: TABLE 17-3<br>A financial analyst wanted to examine
Q124: TABLE 17-10<br>Given below are results from the
Q126: The director of admissions at a state
Q127: TABLE 17-9<br>What are the factors that determine
Q128: TABLE 17-11<br>A logistic regression model was estimated
Q130: TABLE 17-10<br>Given below are results from the