TABLE 16-13 A Local Store Developed a Multiplicative Time-Series Model to Forecast

question 82

Multiple Choice

TABLE 16-13
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:


-Referring to Table 16-13, the best interpretation of the coefficient of Q₃ (0.098) in the regression equation is:

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Definitions:

Stratified Random Sample

A sampling method where the population is divided into subgroups (strata) that share similar characteristics, and random samples are then taken from each subgroup to ensure representation across the population's diversity.

Systematic Random Sample

A sampling method where elements are selected from an ordered sampling frame using a starting point and a fixed periodic interval.

Subset

A set containing some or all elements of another set, without any additional elements.

Frame

In survey research, a frame is a list or representation of all the elements in the population from which a sample is drawn.