Discuss residual analysis in terms of the assumptions required for using the multiple regression model


Residual analysis can be used to examine the residuals with respect to the assumptions underlying multiple regression analysis. We can do many things with residual analysis, including: (1) constructing a histogram of the residuals as a rough check to see if they are approximately normally distributed, (2) constructing a normal probability plot or applying the Lilliefors test to examine whether the residuals could have come from a normally-distributed population, (3) plotting the residuals versus each of the independent variables to see if they exhibit some cycle or pattern with respect to that variable, and (4) plotting the residuals versus the order in which the observations were recorded to look for auto-correlation.

Business

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According to the text, it has been argued that the ultimate goal of effective supply chain management systems is to

A. reduce costs. B. reduce inventory. C. increase sales. D. increase standardization. E. improve quality.

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Which of the following is the BEST advice for including objectives in a proposal?

a. List only enough measurable and attainable objectives to accomplish the purpose of selling your proposal. b. Include a generous list of objectives, even though you know that you may not totally achieve all of them. c. Omit an objectives section; a problem statement is sufficient for defining your goals. d. Your proposal has only one objective: to convince the reader that the benefit from your product or service will outweigh the cost.

Business

The ________ is the price at which the entrepreneur is indifferent about whether to accept the agreement or choose an alternative.

A. bargaining zone B. break-even price C. reservation price D. franchise price

Business

Which of the following statements is false?

A) Insurance companies share information on the claims experience of their insureds. B) A good credit score can lower your insurance premiums. C) Insurance companies cannot refuse to insure you because you have filed a number of small claims. D) Renter's personal property is not insured under the landlords insurance policy.

Business