Quarterly Sales Figures for E-Commerce Retail Sales Were Obtained from the First

question 28

Essay

Quarterly sales figures for e-commerce retail sales were obtained from the first quarter of 2003 through the fourth quarter of 2009. A regression model was estimated to describe the trend in e-commerce retail sales over time.
a. Based on the plot of residuals versus predicted values, is the linear model appropriate? Explain. b. The Durbin-Watson statistic for this regression was found to be 1.727. What can you conclude from this statistic at the 0.01 level of significance?

---

Definitions:

Strategic IS

Refers to Strategic Information Systems, which are systems that help organizations gain a competitive advantage through their use.

System Integration

The process of linking together different computing systems and software applications physically or functionally, to act as a coordinated whole.

Intranets

Private networks within an organization designed to facilitate communication, collaboration, and information sharing among employees.

Tactical Decisions

Short-term decisions made within the framework of strategic plans, focusing on day-to-day operations of an organization.