QM 11-20

Question 1

When is the term “Nonconforming Unit” used to describe?

Answer 1

It is used to describe a unit of product or service containing at least one nonconformity

Question 2

What are the types of Attribute Charts?

3

Answer 2

P Chart (Proportional Nonconforming)
NP Chart (Number Nonconforming)
C Chart (Count of Nonconformities)

Question 3

What is the formula for P Charts?

Answer 3

𝑝= 𝑛𝑝/𝑛

Question 4

What does the symbols mean from the P-Chart formula?

Answer 4

p=Proportion of non 
conforming in the subgroup
n=number in the sample
 or subgroup
np=number of non conforming 
in the sample or subgroup

Question 5

What are the objectives of the P Chart?

1

Answer 5

Determine the average quality level: This information provides the process capability in terms of attributes

Question 6

What are the objectives of the P Chart?

2

Answer 6

Bring to the attention of management any changes in the average

Question 7

What are the objectives of the P Chart?

3

Answer 7

Improve the product quality: Ideas for Quality Improvement

Question 8

What are the objectives of the P Chart?

4

Answer 8

Evaluate the quality performance of operating and management personnel

Question 9

What are the objectives of the P Chart?

5

Answer 9

Suggest places to use 𝑋̅ and 𝑅 chart: They are more sensitive to variation

Question 10

What are the objectives of the P Chart?

6

Answer 10

Determine acceptance criteria of a product before shipment to the customer