Question 1

A process is considered to be in control when all common and special causes have been eliminated.

Accepted Answer

A) True 
 B)False

Question 2

What is the purpose of a process-capability study and what is a process capability index?

Accepted Answer

Process capability refers to the natural

Question 3

Ritz-Carlton Hotel Company uses which one of the following methods to control quality?

Accepted Answer

A) R-bar and x-bar control charts to monitor customer complaints. 
B) The 1:10:100 rule for goods quality only 
C) Self-control of the individual employee based on their spontaneous behavior. 
D) The process capability index for all goods and services provided by the hotel. 
A) R-bar and x-bar control charts to monitor customer complaints. 
B) The 1:10:100 rule for goods quality only 
C) Self-control of the individual employee based on their spontaneous behavior. 
D) The process capability index for all goods and services provided by the hotel.

Question 4

Poor quality that might result from a broken tool or an employee who is ill would be an example of special cause variation.

Accepted Answer

A) True 
 B)False

Question 5

Discuss the three basic quality control practices used in manufacturing.

Accepted Answer

The three basic quality control practice

Question 6

Testing whether a computer boots up the first time is an example of

Accepted Answer

A) Supplier certification and management 
B) In-process control 
C) Finished goods control 
D) Statistical process control 
A) Supplier certification and management 
B) In-process control 
C) Finished goods control 
D) Statistical process control

Question 7

Explain the issues associated with selecting the appropriate sample size and sampling frequency for control charts.

Accepted Answer

A small sample size is desirable to keep

Question 8

A company that makes handheld computers is trying to improve one of its poorer selling products. They conducted some customer surveys and found that customers prefer the product to weigh between 10 and 14 ounces. At present, the mean of the process is 12 ounces and the standard deviation of the process is .4 ounces. They want to ensure that the production process will meet customer expectations; that is, the process capability index (Cp) will be greater than or equal to 1.00.
a.What is the Cp of the current production process?
b.What does the standard deviation of the process have to be for the Cp to equal 1.00?

Accepted Answer

a.C_p = (UTL - LTL)/[(6)(St dev of process

Question 9

Which of the following is not related to a continuous metric?

Accepted Answer

A) Measured as the degree of conformance to a specification 
B) x-bar and R-charts 
C) p-chart 
D) Time 
A) Measured as the degree of conformance to a specification 
B) x-bar and R-charts 
C) p-chart 
D) Time

Question 10

Process capability quantifies the variation that results from common causes.

Accepted Answer

A) True 
 B)False

Question 11

A supplier is producing a machined part for the transmission of your vehicle. The upper specification limit is 0.125 cm and the lower specification limit is 0.085. The process standard deviation for the process that makes this part is 0.008 and the process average is 0.105. What conclusion can be drawn from these process capability data?

Accepted Answer

A) The process is centered and capable. 
B) The process is not centered and capable. 
C) The process is centered and not capable. 
D) The process is not centered and not capable. 
A) The process is centered and capable. 
B) The process is not centered and capable. 
C) The process is centered and not capable. 
D) The process is not centered and not capable.

Question 12

If the mean in the range chart shifts down significantly, it indicates that the variation in the process has decreased.

Accepted Answer

A) True 
 B)False

Question 13

It generally costs more to correct an error or defect at the design stage than after it has reached the customer.

Accepted Answer

A) True 
 B)False

Question 14

Common cause variation is

Accepted Answer

A) Controllable at the sources 
B) Called assignable cause 
C) Can be reduced by statistical process control methods 
D) The responsibility of management 
A) Controllable at the sources 
B) Called assignable cause 
C) Can be reduced by statistical process control methods 
D) The responsibility of management

Question 15

A system governed only by common causes is called a stable system.

Accepted Answer

A) True 
 B)False

Question 16

Which is not related to a discrete metric?

Accepted Answer

A) Counting 
B) Visual inspection 
C) Good or bad 
D) Time 
A) Counting 
B) Visual inspection 
C) Good or bad 
D) Time

Question 17

The lower the rate of defects, the higher the sample size should be in p-charts.

Accepted Answer

A) True 
 B)False

Question 18

Quality at the source means that quality is controlled by

Accepted Answer

A) People responsible for the work 
B) Quality control managers 
C) Front line supervisors 
D) Top management 
A) People responsible for the work 
B) Quality control managers 
C) Front line supervisors 
D) Top management

Question 19

Indications in a control chart of an out-of-control situation include all of the following except

Accepted Answer

A) Six or seven consecutive points that increase or decrease in value 
B) About the same number of points above and below the center line 
C) There are points outside control limits 
D) There are no more points near the center line than there are close to the control limits 
A) Six or seven consecutive points that increase or decrease in value 
B) About the same number of points above and below the center line 
C) There are points outside control limits 
D) There are no more points near the center line than there are close to the control limits

Question 20

In developing process control charts, if special causes are present, they are not representative of the true state of statistical control, and the calculations of the center line and control limits will be biased.

Accepted Answer

A) True 
 B)False

A process is considered to be in control when all common and special causes have been eliminated.

What is the purpose of a process-capability study and what is a process capability index?

Ritz-Carlton Hotel Company uses which one of the following methods to control quality?

Poor quality that might result from a broken tool or an employee who is ill would be an example of special cause variation.

Discuss the three basic quality control practices used in manufacturing.

Testing whether a computer boots up the first time is an example of

Explain the issues associated with selecting the appropriate sample size and sampling frequency for control charts.

Which of the following is not related to a continuous metric?

Process capability quantifies the variation that results from common causes.

If the mean in the range chart shifts down significantly, it indicates that the variation in the process has decreased.

It generally costs more to correct an error or defect at the design stage than after it has reached the customer.

Common cause variation is

A system governed only by common causes is called a stable system.

Which is not related to a discrete metric?

The lower the rate of defects, the higher the sample size should be in p-charts.

Quality at the source means that quality is controlled by

Indications in a control chart of an out-of-control situation include all of the following except

In developing process control charts, if special causes are present, they are not representative of the true state of statistical control, and the calculations of the center line and control limits will be biased.

Goods, Services, and Operations Management

Value Chains

Measuring Performance in Operations

Operations Strategy

Technology and Operations Management

Goods and Service Design

Process Selection, Design, and Analysis

Facility and Work Design

Supply Chain Design

Capacity Management

Forecasting and Demand Planning

Managing Inventories

Resource Management

Operations Scheduling and Sequencing

Quality Management

Lean Operating Systems

Project Management

Filters

Exam 16: Quality Control and Spc

A process is considered to be in control when all common and special causes have been eliminated.

What is the purpose of a process-capability study and what is a process capability index?

Ritz-Carlton Hotel Company uses which one of the following methods to control quality?

Poor quality that might result from a broken tool or an employee who is ill would be an example of special cause variation.

Discuss the three basic quality control practices used in manufacturing.

Testing whether a computer boots up the first time is an example of

Explain the issues associated with selecting the appropriate sample size and sampling frequency for control charts.

Which of the following is not related to a continuous metric?

Process capability quantifies the variation that results from common causes.

If the mean in the range chart shifts down significantly, it indicates that the variation in the process has decreased.

It generally costs more to correct an error or defect at the design stage than after it has reached the customer.

Common cause variation is

A system governed only by common causes is called a stable system.

Which is not related to a discrete metric?

The lower the rate of defects, the higher the sample size should be in p-charts.

Quality at the source means that quality is controlled by

Indications in a control chart of an out-of-control situation include all of the following except

In developing process control charts, if special causes are present, they are not representative of the true state of statistical control, and the calculations of the center line and control limits will be biased.

Goods, Services, and Operations Management

Value Chains

Measuring Performance in Operations

Operations Strategy

Technology and Operations Management

Goods and Service Design

Process Selection, Design, and Analysis

Facility and Work Design

Supply Chain Design

Capacity Management

Forecasting and Demand Planning

Managing Inventories

Resource Management

Operations Scheduling and Sequencing

Quality Management

Lean Operating Systems

Project Management

Filters