SCENARIO 18-9 What Are the Factors That Determine the Acceleration Time (In

question 321

Multiple Choice

SCENARIO 18-9
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 ( R² _{yj.(All variables except j )} ) 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 X _j as the dependent variable and all other X variables as independent variables ( R² _j ) are,respectively, 0.7461,0.5676,0.6764,0.8582,0.6632.
-Referring to Scenario 18-9,what is the correct interpretation for the estimated coefficient for SUV?

---

Definitions:

Representation Election

A voting process conducted, typically under the auspices of a labor relations board, in which employees decide whether or not they wish to be represented by a union.

Formal Role

The officially designated responsibilities and duties associated with a job or position within an organization.

NLRA

The National Labor Relations Act, a foundational statute in United States labor law which protects the rights of employees to engage in collective bargaining and to unionize.

Representation Election

A voting process conducted to determine if employees want to be represented by a particular union.