# Assignment 7

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### Question Description

I need a a paper. dont mind plagiarism I just need it to guide me.

The experiment 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.

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?

3 days ago

case_study_solutions__3_.docx

mat510_assignment_calculation.xlsx

lecture_notes.xls

psumanrec
School: Duke University

Customer Size
Small
Large
Small
Large
Small
Large
Small
Large

Customer Location
Foreign
Foreign
Domestic
Domestic
Foreign
Foreign
Domestic
Domestic

Product Type
Commodity
Commodity
Commodity
Commodity
Speciality
Speciality
Speciality
Speciality

Number of Errors
15
18
6
2
19
23
16
21

Row Labels
-1
1
Grand Total

Average of Number of Errors
14
16
15

Customer Size,X1

Sum(+)
Sum(-1)
Average(+1)
Average(-1)
Effect
X1
X2
X3

Customer Size
Customer Location
Product Type

Customer Location,X2

Product Type,X3

-1
1
-1
1
-1
1
-1
1

-1
-1
1
1
-1
-1
1
1

-1
-1
-1
-1
1
1
1
1

64
56
16
14
2

45
75
11.25
18.75
-7.5

79
41
19.75
10.25
9.5

(-)Small ,(+)Large
(-)Foreign,(+1)Domestic
(-1)Commodity,(+)Speciality

X1X2

X1X3

X2X3

X1X2X3

1
-1
-1
1
1
-1
-1
1

1
-1
1
-1
-1
1
-1
1

1
1
-1
-1
-1
-1
1
...

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Anonymous
Tutor went the extra mile to help me with this essay. Citations were a bit shaky but I appreciated how well he handled APA styles and how ok he was to change them even though I didnt specify. Got a B+ which is believable and acceptable.

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