Effects of variables on invoice errors

by | Aug 25, 2021 | Assignment

Homework Assignment 7Due in Week 8 and worth 30 pointsTheexperiment data in below table was to evaluate the effects of three variables on invoice errors for a company. Invoice errors had been a major contributor to lengthening the time that customers took to pay their invoices and increasing the accounts receivables for a major chemical company. It was conjectured that the errors might be due to the size of the customer (larger customers have more complex orders), the customer location (foreign orders are more complicated), and the type of product. A subset of the data is summarized in the following Table. Table: Invoice Experiment ErrorCustomer SizeCustomer LocationProduct TypeNumber of Errors—15+–18-+-6++-2–+19+-+23-++16+++21Customer Size: Small (-), Large (+)Customer Location: Foreign (-), Domestic (+)Product Type: Commodity (-), Specialty (=)Reference: Moen, Nolan, and Provost (R. D. Moen, T. W. Nolan and L. P. Provost. Improving Quality through Planned Experimentation. New York: McGraw-Hill, 1991)Use the date in table above and answer the following questions in the space provided below:1.    What is the nature of the effects of the factors studied in this experiment? 2.    What strategy would you use to reduce invoice errors, given the results of this experiment?

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