TABLE 16-12 A Local Store Developed a Multiplicative Time-Series Model to Forecast

question 5

Multiple Choice

TABLE 16-12
A local store developed a multiplicative time-series model to forecast its revenues in future quarters, using quarterly data on its revenues during the 4-year period from 2005 to 2009. The following is the resulting regression equation:
log₁₀ = 6.102 + 0.012 X - 0.129 Q₁ - 0.054 Q₂ + 0.098 Q₃
where is the estimated number of contracts in a quarter.
X is the coded quarterly value with X = 0 in the first quarter of 2005.
Q₁ is a dummy variable equal to 1 in the first quarter of a year and 0 otherwise.
Q₂ is a dummy variable equal to 1 in the second quarter of a year and 0 otherwise.
Q₃ is a dummy variable equal to 1 in the third quarter of a year and 0 otherwise.
-Referring to Table 16-12, the best interpretation of the coefficient of X (0.012) in the regression equation is

• A) the quarterly compound growth rate in revenues is around 2.8%.
• B) the annual growth rate in revenues is around 2.8%.
• C) the quarterly growth rate in revenues is around 1.2%.
• D) the annual growth rate in revenues is around 1.2%.

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Definitions:

Incentives

Rewards or penalties that influence the motivation and behaviors of individuals and organizations towards certain actions.

Minimum-Wage Laws

A law that establishes the minimum hourly wage employers are legally allowed to pay their employees.

Labor Demand

The total amount of workers that employers are willing and able to hire at a given wage rate in an economy or specific market.

Working Poor

Describes individuals who are employed but whose earnings are insufficient to meet the basic costs of living.