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?