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Instruction 14-4
a Contractor Developed a Multiplicative Time-Series Model to Forecast

question 190

Multiple Choice

Instruction 14-4
A contractor developed a multiplicative time-series model to forecast the number of contracts in future quarters,using quarterly data on number of contracts during the 3-year period from 2008 to 2010.The following is the resulting regression equation:
$\log _ { 10 } \hat { Y } = 3.37 + 0.117 X - 0.083 Q _ { 1 } + 1.28 Q _ { 2 } + 0.617 Q _ { 3 }$
Where
$\hat { Y }$ is the estimated number of contracts in a quarter
X is the coded quarterly value with X = 0 in the first quarter of 2008.
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 Instruction 14-4,the best interpretation of the coefficient of X (0.117) in the regression equation is

Definitions:

Afferent;efferent

Afferent refers to conducting signals towards a central point (e.g., nerves that carry sensory information to the brain), while efferent refers to conducting signals away from a central point (e.g., nerves that carry motor signals from the brain to muscles).

Nervous System

The network of nerve cells and fibers that transmits nerve impulses between parts of the body, governing both voluntary actions and involuntary responses.

Electrochemical Communication

The process by which neurons communicate with each other, involving electrical signals within neurons and chemical signals (neurotransmitters) between neurons.

Neurons

Electrically excitable cells in the nervous system that process and transmit information through electrical and chemical signals.

Instruction 14-4 a Contractor Developed a Multiplicative Time-Series Model to Forecast

Definitions:

Instruction 14-4
a Contractor Developed a Multiplicative Time-Series Model to Forecast