Question 1

Which of the following statements about process capability is accurate?

Accepted Answer

A) Cpk is a better measure of process capability than Cp. 
B) Cp is exactly equal to Cpk when the mean is centered in the specification limits. 
C) Given the same process,Cpk is always less than or equal to Cp. 
D) All of the above are accurate. 
A) Cpk is a better measure of process capability than Cp. 
B) Cp is exactly equal to Cpk when the mean is centered in the specification limits. 
C) Given the same process,Cpk is always less than or equal to Cp. 
D) All of the above are accurate.

Question 2

Lean projects are usually simpler than six sigma projects.

Accepted Answer

A) True 
 B)False

Question 3

Lean and six sigma projects both use 5-step processes.

Accepted Answer

A) True 
 B)False

Question 4

Attribute control occurs when the product characteristic is measured on a continuous scale.

Accepted Answer

A) True 
 B)False

Question 5

A cause-and-effect diagram:

Accepted Answer

A) Identifies common causes of quality defects on its spines 
B) Is often used in conjunction with a Pareto chart 
C) Could be used to facilitate continuous improvement 
D) Is also called a fishbone diagram 
E) All of the above are true 
A) Identifies common causes of quality defects on its spines 
B) Is often used in conjunction with a Pareto chart 
C) Could be used to facilitate continuous improvement 
D) Is also called a fishbone diagram 
E) All of the above are true

Question 6

Six sigma projects are typically managed by full-time black belts.

Accepted Answer

A) True 
 B)False

Question 7

Suppose that you have taken 30 samples of 200 units each and calculated the proportion defective as p = .075.What is the upper control limit for a p-chart (rounded to 4 decimals)?

Accepted Answer

A) .2192 
B) .0191 
C) .1309 
D) .7500 
A) .2192 
B) .0191 
C) .1309 
D) .7500

Question 8

A complete system of quality control:

Accepted Answer

A) Is defined by critical control points,inspectors,measurements,costs,and other considerations 
B) Involves a zero defects philosophy 
C) Requires a continuous scale for measurement of defects 
D) Must include both variable and attribute measurements 
A) Is defined by critical control points,inspectors,measurements,costs,and other considerations 
B) Involves a zero defects philosophy 
C) Requires a continuous scale for measurement of defects 
D) Must include both variable and attribute measurements

Question 9

For which of the following would a p-chart be used?

Accepted Answer

A) Monitor dispersion in sample data 
B) Measure the number of defects per unit 
C) Measure the central tendency 
D) Measure the variability 
E) Measure the fraction defective 
A) Monitor dispersion in sample data 
B) Measure the number of defects per unit 
C) Measure the central tendency 
D) Measure the variability 
E) Measure the fraction defective

Question 10

A Pareto chart:

Accepted Answer

A) Shows causes and effects of quality problems 
B) Shows the importance of the various types of defects that have been found 
C) Is not useful when first studying a quality problem 
D) Has both upper and lower specification limits 
A) Shows causes and effects of quality problems 
B) Shows the importance of the various types of defects that have been found 
C) Is not useful when first studying a quality problem 
D) Has both upper and lower specification limits

Question 11

We need information only regarding the central tendency of the process while examining a continuous process.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following statements about process quality control is NOT true?

Accepted Answer

A) Assignable cause variation is also referred as special cause variation 
B) An observation outside the control limits is an example of a special cause of variation 
C) Common cause variation can be eliminated from the process by removing the potential causes 
D) The control limits will include 99.74% of the population under the normal probability distribution assuming that the process is in control 
E) None of the above 
A) Assignable cause variation is also referred as special cause variation 
B) An observation outside the control limits is an example of a special cause of variation 
C) Common cause variation can be eliminated from the process by removing the potential causes 
D) The control limits will include 99.74% of the population under the normal probability distribution assuming that the process is in control 
E) None of the above

Question 13

Which of the following statements is NOT true about six sigma quality?

Accepted Answer

A) Six sigma results in 3.4 ppm defects 
B) Six sigma is equivalent to a process capability of Cpk = 1.5 
C) Six sigma corresponds to 3 standard deviations on either side of the mean 
D) Six sigma can be applied to administrative and service processes as well 
E) Motorola invented the term "six sigma quality" in the mid-80s 
A) Six sigma results in 3.4 ppm defects 
B) Six sigma is equivalent to a process capability of Cpk = 1.5 
C) Six sigma corresponds to 3 standard deviations on either side of the mean 
D) Six sigma can be applied to administrative and service processes as well 
E) Motorola invented the term "six sigma quality" in the mid-80s

Question 14

Suppose that a process is in a state of control and we have the following information for a human weights measurement study. Average weight of males in the study = 150 lbs.
Average range of the male weights = 100 lbs.
A2 = .577
D3 = 0
D4 = 2.115
What is the upper control limit for the average (mean)chart?

Accepted Answer

A) 207.7 lbs 
B) 92.3 lbs 
C) 361.5 lbs 
D) 175 lbs 
A) 207.7 lbs 
B) 92.3 lbs 
C) 361.5 lbs 
D) 175 lbs

Question 15

Using the same data as in question 10,what is the lower control limit for a p-chart (rounded to 4 decimals)?

Accepted Answer

A) .0750 
B) .0191 
C) .0000 
D) .0692 
A) .0750 
B) .0191 
C) .0000 
D) .0692

Question 16

Which of the following techniques are used for continuous improvement?

Accepted Answer

A) Pareto charts 
B) Cause-and-effect diagrams 
C) Process capability charts 
D) Only a and b 
E) a,b,and c 
A) Pareto charts 
B) Cause-and-effect diagrams 
C) Process capability charts 
D) Only a and b 
E) a,b,and c

Which of the following statements about process capability is accurate?

Lean projects are usually simpler than six sigma projects.

Lean and six sigma projects both use 5-step processes.

Attribute control occurs when the product characteristic is measured on a continuous scale.

A cause-and-effect diagram:

Six sigma projects are typically managed by full-time black belts.

Suppose that you have taken 30 samples of 200 units each and calculated the proportion defective as p = .075.What is the upper control limit for a p-chart (rounded to 4 decimals)?

A complete system of quality control:

For which of the following would a p-chart be used?

A Pareto chart:

We need information only regarding the central tendency of the process while examining a continuous process.

Which of the following statements about process quality control is NOT true?

Which of the following statements is NOT true about six sigma quality?

Using the same data as in question 10,what is the lower control limit for a p-chart (rounded to 4 decimals)?

Which of the following techniques are used for continuous improvement?

The Operations Function

Operations and Supply Chain Strategy

Product Design

Process Selection

Service Process Design

Process-Flow Analysis

Lean Thinking and Lean Systems

Managing Quality

Supply Chain Management

Forecasting

Capacity Planning

Scheduling Operations

Project Planning and Scheduling

Independent Demand Inventory

Materials Requirements Planning and ERP

Filters

Exam 9: Quality Control and Improvement

Which of the following statements about process capability is accurate?

Lean projects are usually simpler than six sigma projects.

Lean and six sigma projects both use 5-step processes.

Attribute control occurs when the product characteristic is measured on a continuous scale.

A cause-and-effect diagram:

Six sigma projects are typically managed by full-time black belts.

Suppose that you have taken 30 samples of 200 units each and calculated the proportion defective as p = .075.What is the upper control limit for a p-chart (rounded to 4 decimals)?

A complete system of quality control:

For which of the following would a p-chart be used?

A Pareto chart:

We need information only regarding the central tendency of the process while examining a continuous process.

Which of the following statements about process quality control is NOT true?

Which of the following statements is NOT true about six sigma quality?

Using the same data as in question 10,what is the lower control limit for a p-chart (rounded to 4 decimals)?

Which of the following techniques are used for continuous improvement?

The Operations Function

Operations and Supply Chain Strategy

Product Design

Process Selection

Service Process Design

Process-Flow Analysis

Lean Thinking and Lean Systems

Managing Quality

Supply Chain Management

Forecasting

Capacity Planning

Scheduling Operations

Project Planning and Scheduling

Independent Demand Inventory

Materials Requirements Planning and ERP

Filters