Invoice Experiment Letter
Table: Invoice Experiment Error Customer Size Customer Location Product Type Number of Errors - - - 15 + - - 18 - + - 6 + + - 2 - - + 19 + - + 23 - + + 16 + + + 21 Customer Size. Small (-), Large (+) Customer Location: Foreign (-), Domestic (+) Product Type: Commodity (-), Specialty (=)
Use the date in table above and answer the following questions in the space provided below:
What is the nature of the effects of the factors studied in this experiment?
What strategy would you use to reduce invoice errors, given the results of this experiment?