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TABLE 16-14
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:
ln Ŷ = 3.37 + 0.117 X - 0.083 Q₁ + 1.28 Q₂ + 0.617 Q₃
where Ŷ 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 Table 16-14, the best interpretation of the coefficient of Q₃ (0.617) in the regression equation is
Opponent-Process Pairs
A theory suggesting that the human visual system interprets colors in an antagonistic way, through pairs of colors opposite each other on the color spectrum.
Young-Helmholtz Theory
A theory of color vision proposing that the human eye perceives color because it has three types of receptors, each sensitive to red, green, or blue light.
Primary Color Experiences
Sensations associated with viewing primary colors (red, blue, yellow), which form the basis for the perception of all other colors through their combination.
Color-Blind Eye
A condition whereby an individual has difficulty distinguishing between certain colors, typically red and green.
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