Exhibit 18

question 13

Short Answer

Exhibit 18.8.Quarterly sales of a department store for the last 7 years are given in the following table. The Excel scatterplot shown above indicates that the quarterly sales have an increasing trend and seasonality.Therefore,the linear regression model,Sales = β₀ + β₁Qtr1 + β₂Qtr2 + β₃Qtr3 + β₄t + ε with three seasonal dummy variables Qtr1,Qtr2 and Qtr3,and the decomposition method are proposed to make sales forecasts.For the regression model,the following Excel partial output is available. Refer to Exhibit 18.8.What is the regression equation for the linear trend model with seasonal dummy variables?

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Definitions:

Perceived Purchase Risk

The potential loss or adverse outcomes a consumer believes might occur from buying a product or service.

Functional Risk

The potential for a product or service to fail to perform its intended function, leading to dissatisfaction or harm.

Physical Risk

The potential for bodily harm or health hazards that individuals may face in various activities or environments.

Social Risk

Social risk in consumer behavior refers to the potential for a product or service to adversely affect the user's social standing, image, or relationships with others.