Question 1

The range is the difference between the smallest and largest values in a sample.

Accepted Answer

A) True 
 B)False

Question 2

A process is generally considered to be in control when

Accepted Answer

A)  there are no sample points outside the control limits. 
B)  most points are near the centre line, without many being close to the control limits. 
C)  sample points are randomly distributed equally above and below the centre line. 
D)  all of the above are true. 
A)  there are no sample points outside the control limits. 
B)  most points are near the centre line, without many being close to the control limits. 
C)  sample points are randomly distributed equally above and below the centre line. 
D)  all of the above are true.

Question 3

When monitoring a process's output with a quantitative variable either an R-chart or an   -chart is used, but never both.

Accepted Answer

A) True 
 B)False

Question 4

If the quality of a process's output is determined by the number of defects within a small sample, use a(n) ___ control chart.

Accepted Answer

A)    
B)  R 
C)  c 
D)  p 
A)    
B)  R 
C)  c 
D)  p

Question 5

The popularity of Excel and other data analysis software has been a major factor in the increased use of statistical process control.

Accepted Answer

A) True 
 B)False

Question 6

Process control is achieved by taking periodic samples from a process and plotting the sample points on a chart to determine if the process is within control limits.

Accepted Answer

A) True 
 B)False

Question 7

A company manufactures a product that has a design (nominal) target width of 5 inches with tolerances of   .05 inch. The process that produces the product has a mean of 4.995 inches and a standard deviation of 0.01 inch. The process capability ratio for this process is

Accepted Answer

A)  -1.67. 
B)  -1.5. 
C)  1.5. 
D)  1.67. 
A)  -1.67. 
B)  -1.5. 
C)  1.5. 
D)  1.67.

Question 8

Tolerances reflect the amount of common cause variation allowed in a process.

Accepted Answer

A) True 
 B)False

Question 9

Defect and defective mean the same thing for attribute (qualitative) control charts.

Accepted Answer

A) True 
 B)False

Question 10

When a control chart detects no special cause variation in a process, the upper and lower control limits are the same value.

Accepted Answer

A) True 
 B)False

Question 11

Use variable control charts Variable control charts are used for continuous variables that can be measured, such as weight or volume.

Accepted Answer

Two commonly used variable control chart

Question 12

For the process to be capable of meeting design specification, the process capability index must be

Accepted Answer

A)  less than one (1.0). 
B)  equal to or greater than one (1.0). 
C)  smaller than Six Sigma. 
D)  larger than Six Sigma. 
A)  less than one (1.0). 
B)  equal to or greater than one (1.0). 
C)  smaller than Six Sigma. 
D)  larger than Six Sigma.

Question 13

The ___ is the maximum number of defective items a customer will accept in a lot.

Accepted Answer

A)  producer's risk 
B)  consumer's risk 
C)  average outgoing quality 
D)  lot tolerance percent defective 
A)  producer's risk 
B)  consumer's risk 
C)  average outgoing quality 
D)  lot tolerance percent defective

Question 14

Process control charts are often used at a critical point after which it is difficult to correct or rework the process output.

Accepted Answer

A) True 
 B)False

Question 15

Statistical process control is only effective for service processes.

Accepted Answer

A) True 
 B)False

Question 16

One advantage of using a pattern test is that special cause variations may be identified before any points are plotted outside the control limits.

Accepted Answer

A) True 
 B)False

Question 17

Statistical process control involves monitoring and controlling a process to prevent poor quality.

Accepted Answer

A) True 
 B)False

Question 18

The average outgoing quality is

Accepted Answer

A)  the expected number of non-defective items that will pass on to the customer with a sampling plan. 
B)  the number of defective items in a lot that the customer is willing to accept. 
C)  the expected number of defective items that will pass on to the customer with a sampling plan. 
D)  the number of defective items in a lot that the customer is not willing to accept. 
A)  the expected number of non-defective items that will pass on to the customer with a sampling plan. 
B)  the number of defective items in a lot that the customer is willing to accept. 
C)  the expected number of defective items that will pass on to the customer with a sampling plan. 
D)  the number of defective items in a lot that the customer is not willing to accept.

Question 19

Which of the following control charts are often based on sample sizes larger than one hundred?

Accepted Answer

A)    
B)  R 
C)  c 
D)  p 
A)    
B)  R 
C)  c 
D)  p

Question 20

A sampling plan provides a set of guidelines for accepting a lot.

Accepted Answer

A) True 
 B)False

The range is the difference between the smallest and largest values in a sample.

A process is generally considered to be in control when

When monitoring a process's output with a quantitative variable either an R-chart or an -chart is used, but never both.

If the quality of a process's output is determined by the number of defects within a small sample, use a(n) ___ control chart.

The popularity of Excel and other data analysis software has been a major factor in the increased use of statistical process control.

Process control is achieved by taking periodic samples from a process and plotting the sample points on a chart to determine if the process is within control limits.

A company manufactures a product that has a design (nominal) target width of 5 inches with tolerances of .05 inch. The process that produces the product has a mean of 4.995 inches and a standard deviation of 0.01 inch. The process capability ratio for this process is

Tolerances reflect the amount of common cause variation allowed in a process.

Defect and defective mean the same thing for attribute (qualitative) control charts.

When a control chart detects no special cause variation in a process, the upper and lower control limits are the same value.

Use variable control charts Variable control charts are used for continuous variables that can be measured, such as weight or volume.

For the process to be capable of meeting design specification, the process capability index must be

The ___ is the maximum number of defective items a customer will accept in a lot.

Process control charts are often used at a critical point after which it is difficult to correct or rework the process output.

Statistical process control is only effective for service processes.

One advantage of using a pattern test is that special cause variations may be identified before any points are plotted outside the control limits.

Statistical process control involves monitoring and controlling a process to prevent poor quality.

The average outgoing quality is

Which of the following control charts are often based on sample sizes larger than one hundred?

A sampling plan provides a set of guidelines for accepting a lot.

Introduction to Operations and Supply Chain Management

Quality Management

Product Design

Service Design

Processes and Technology

Capacity and Facilities Design

Human Resources

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Exam 3: Statistical Process Control

The range is the difference between the smallest and largest values in a sample.

A process is generally considered to be in control when

When monitoring a process's output with a quantitative variable either an R-chart or an -chart is used, but never both.

If the quality of a process's output is determined by the number of defects within a small sample, use a(n) ___ control chart.

The popularity of Excel and other data analysis software has been a major factor in the increased use of statistical process control.

Process control is achieved by taking periodic samples from a process and plotting the sample points on a chart to determine if the process is within control limits.

A company manufactures a product that has a design (nominal) target width of 5 inches with tolerances of .05 inch. The process that produces the product has a mean of 4.995 inches and a standard deviation of 0.01 inch. The process capability ratio for this process is

Tolerances reflect the amount of common cause variation allowed in a process.

Defect and defective mean the same thing for attribute (qualitative) control charts.

When a control chart detects no special cause variation in a process, the upper and lower control limits are the same value.

Use variable control charts Variable control charts are used for continuous variables that can be measured, such as weight or volume.

For the process to be capable of meeting design specification, the process capability index must be

The ___ is the maximum number of defective items a customer will accept in a lot.

Process control charts are often used at a critical point after which it is difficult to correct or rework the process output.

Statistical process control is only effective for service processes.

One advantage of using a pattern test is that special cause variations may be identified before any points are plotted outside the control limits.

Statistical process control involves monitoring and controlling a process to prevent poor quality.

The average outgoing quality is

Which of the following control charts are often based on sample sizes larger than one hundred?

A sampling plan provides a set of guidelines for accepting a lot.

Introduction to Operations and Supply Chain Management

Quality Management

Product Design

Service Design

Processes and Technology

Capacity and Facilities Design

Human Resources

Project Management

Supply Chain Management Strategy and Design

Global Supply Chain Procurement and Distribution

Forecasting

Inventory Management

Sales and Operations Planning

Resource Planning

Lean Systems

Scheduling

Filters