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

question 65

Short Answer

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,_____of the variation in Accel Time can be explained by Cargo Vol while controlling for the other independent variables.

---

Definitions:

Paradigm

A fundamental set of concepts, practices, and ways of viewing reality that defines a particular scientific discipline or societal worldview at a given time.

Social Reality

The complex web of social norms, beliefs, and structures that shape our perception of the world and influence human behavior.

Assumptions

are accepted beliefs or statements taken for granted without proof, often forming the basis for arguments or decision-making.

Macrosociology

An approach in sociology that analyzes societies, systems, and populations on a large scale, focusing on social structures and institutions.