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

question 209

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 HP while controlling for the other independent variables.

---

Definitions:

Real GDP

An economic metric that measures the value of all goods and services produced by a country in a year, adjusted for inflation, reflecting the real growth.

GDP Deflator

An economic metric that converts the money-value measure of GDP into an index for quantity comparison by deflating price inflation.

Real GDP

The calculation of a nation's economic production, accounting for variations in prices due to inflation or deflation, to represent the actual value of goods and services generated.

Real Terms

Adjusted for inflation, reflecting the actual purchasing power of money.