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TABLE 14-16
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 30 different vehicle models were collected:
Y (Accel Time): Acceleration time in sec.
X1 (Engine Size): c.c.
X2 (Sedan): 1 if the vehicle model is a sedan and 0 otherwise
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 determinations
and
are 0.3301,and 0.0594,respectively.
The coefficient of determination for the regression model using each of the 2 independent variables as the dependent variable and the other independent variable as independent variables ( )are,respectively 0.0077,and 0.0077.
-Referring to Table 14-16,________ of the variation in Accel Time can be explained by the dummy variable Sedan while controlling for the other independent variable.
Aggregate Demand
Aggregate requirement for all types of goods and services across an economy at differing levels of prices, during a specified period.
Aggregate Supply
The complete inventory of goods and services that businesses in an economic setting aim to sell during a designated timeframe.
Aggregate Demand
The total demand for all goods and services in an economy at a given overall price level and in a specific time period, comprising of consumption, investment, government spending, and net exports.
Aggregate Supply
The aggregate amount of products and services that companies within an economy intend to sell over a certain period.
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