TABLE 14-3 an Economist Is Interested to See How Consumption for an for an Economy

question 225

Multiple Choice

TABLE 14-3
An economist is interested to see how consumption for an economy (in $ billions) is influenced by gross domestic product ($ billions) and aggregate price (consumer price index) .The Microsoft Excel output of this regression is partially reproduced below.
-Referring to Table 14-3,when the economist used a simple linear regression model with consumption as the dependent variable and GDP as the independent variable,he obtained an r² value of 0.971.What additional percentage of the total variation of consumption has been explained by including aggregate prices in the multiple regression?

• A)98.2
• B)11.1
• C)2.8
• D)1.1

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Definitions:

Exponential Smoothing

A time series forecasting method for univariate data that applies weighting factors which decrease exponentially over time, emphasizing more recent observations.

Liquor Sales

The commercial activity of selling alcoholic beverages, including spirits, wines, and beers.

Smoothing Constant

A parameter used in exponential smoothing techniques that determines the weight given to the most recent observation in forecasting.

Exponential Smoothing

A forecasting technique that applies weighted averages of past observations, giving more weight to more recent observations to smooth data.