A Time Series Regression Equation for a Surfboard Manufacturing Company

question 27

Multiple Choice

A time series regression equation for a surfboard manufacturing company in Australia is given below: Y = 35 + 4Q₁ + 0.5Q₃ + 8Q₄ + 3t
With t in quarters, the origin is December 2010 and Q₁ is the indicator variable for March, Q₃ is the indicator variable for September and Q₄ is the indicator variable for December.
Which of the following is the correct value of the estimate for the number of surfboards sold by this manufacturing company in March 2015?

• A) 86
• B) 90
• C) 93
• D) 51

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Definitions:

ROI

A metric used to evaluate the efficiency or profitability of an investment, comparing net gain to initial cost.

Utility

The usefulness or value that a product, service, or action provides to individuals or organizations.

Indirect Costs

Expenses not directly tied to the production of goods or services, such as administrative overheads.

Developmental Costs

The expenses associated with the creation and implementation of projects, programs, or products, including research, design, and training programs.