Question 1

One hundred percent samples are also known as screening samples.

Accepted Answer

A) True 
 B)False

Question 2

In a variables control chart, large jumps of more than three or four standard deviations result in process drift.

Accepted Answer

A) True 
 B)False

Question 3

Use the following table to answer the question(s) below.
  
-Close tolerances are required in the manufacturing section of an automotive parts business. Since the customers demand quality, the owner wants to monitor the operation closely using statistical process control. After taking 8 samples of size 4, the owner finds himself with the data in the table above. What is the center line for a chart that will monitor process average?

Accepted Answer

A)  100.20 
B)  102.00 
C)  99.88 
D)  98.00 
E)  cannot be determined from the information given 
A)  100.20 
B)  102.00 
C)  99.88 
D)  98.00 
E)  cannot be determined from the information given

Question 4

Use the following table to answer the question(s) below.
  
-A machine shop owner wishes to monitor the diameter of an engine boring operation where the piston bore should be 4.25". He obtains 8 samples of 5 and records the data in the table above. What should the lower and upper control limits be for an X-bar chart?

Accepted Answer

A)  (5.00, 8.00) 
B)  (-1.50, 1.50) 
C)  (4.33, 5.12) 
D)  (0.00, 1.45) 
E)  (-5.10, 5.10) 
A)  (5.00, 8.00) 
B)  (-1.50, 1.50) 
C)  (4.33, 5.12) 
D)  (0.00, 1.45) 
E)  (-5.10, 5.10)

Question 5

Process stability refers to the ability of a process to produce a product that meets specification.

Accepted Answer

A) True 
 B)False

Question 6

________ are tools for monitoring process variation.

Accepted Answer

A)  Pareto charts 
B)  Control charts 
C)  Histograms 
D)  Scatter diagrams 
E)  Cause-and-effect diagrams 
A)  Pareto charts 
B)  Control charts 
C)  Histograms 
D)  Scatter diagrams 
E)  Cause-and-effect diagrams

Question 7

Although  $ \bar{x} $ charts generally are preferred for variables data, sometimes it is too time consuming or inconvenient to compute subgroup averages. In these cases, a(n) ________ is used.

Accepted Answer

A)   $ \bar{x} $ chart 
B)  X chart 
C)  p chart 
D)  s chart 
E)  R chart 
A)   $ \bar{x} $ chart 
B)  X chart 
C)  p chart 
D)  s chart 
E)  R chart

Question 8

Which of the following is true of nonrandom variation?

Accepted Answer

A)  It is uncontrollable. 
B)  It is centered on a mean. 
C)  It occurs with a somewhat consistent amount of dispersion. 
D)  It results from a shift in a process mean or some unexpected occurrence. 
E)  It results in a process that is repeatable. 
A)  It is uncontrollable. 
B)  It is centered on a mean. 
C)  It occurs with a somewhat consistent amount of dispersion. 
D)  It results from a shift in a process mean or some unexpected occurrence. 
E)  It results in a process that is repeatable.

Question 9

The ________ reflects a population distribution.

Accepted Answer

A)  p chart 
B)  s chart 
C)  u chart 
D)  X chart 
E)  R chart 
A)  p chart 
B)  s chart 
C)  u chart 
D)  X chart 
E)  R chart

Question 10

Design a control chart to monitor the gas mileage in your car. Collect the data over time.

Accepted Answer

The control chart would include an x-bar

Question 11

If a systematic sample is performed according to sequence, the product is inspected at regular intervals of time.

Accepted Answer

A) True 
 B)False

Question 12

Use the following table to answer the question(s) below.
  
-A machine shop owner wishes to monitor the diameter of an engine boring operation where the piston bore should be 4.25". He obtains 8 samples of 5 and records the data in the table above. What should the upper and lower control limits be for an R chart?

Accepted Answer

A)  (5.00, 8.00) 
B)  (0.00, 2.50) 
C)  (4.33, 5.12) 
D)  (0.00, 1.45) 
E)  (-5.10, 5.10) 
A)  (5.00, 8.00) 
B)  (0.00, 2.50) 
C)  (4.33, 5.12) 
D)  (0.00, 1.45) 
E)  (-5.10, 5.10)

Question 13

Statistical process control charts are tools for monitoring process variation.

Accepted Answer

A) True 
 B)False

Question 14

Process charts are graphs designed to signal process workers when nonrandom variation is occurring in a process.

Accepted Answer

A) True 
 B)False

Question 15

Consumer's risk is also called a ________ error.

Accepted Answer

A)  processing 
B)  non-response 
C)  type II 
D)  response 
E)  type I 
A)  processing 
B)  non-response 
C)  type II 
D)  response 
E)  type I

Question 16

The upper and lower specifications for metal head plates are 5   0.1 cm. A sample of the metal head plates in 25 undergraduates yields a mean of 5.05. We know that the population standard deviation is 0.04. What is the population capability index?

Accepted Answer

A)  2.15 
B)  2.51 
C)  1.25 
D)  1.52 
E)  0.42 
A)  2.15 
B)  2.51 
C)  1.25 
D)  1.52 
E)  0.42

Question 17

A g chart is useful when data are hypergeometrically distributed.

Accepted Answer

A) True 
 B)False

Question 18

Consumer's risk happens when statistical quality analysis fails to result in the scrapping or reworking of a defective product.

Accepted Answer

A) True 
 B)False

Question 19

________ are often used in monitoring the production of silicon chips for computers.

Accepted Answer

A)  X charts 
B)  c charts 
C)  np charts 
D)  R charts 
E)  s charts 
A)  X charts 
B)  c charts 
C)  np charts 
D)  R charts 
E)  s charts

Question 20

The s chart is often used where variation in a process is large.

Accepted Answer

A) True 
 B)False

One hundred percent samples are also known as screening samples.

In a variables control chart, large jumps of more than three or four standard deviations result in process drift.

Process stability refers to the ability of a process to produce a product that meets specification.

________ are tools for monitoring process variation.

Although $\bar{x}$ charts generally are preferred for variables data, sometimes it is too time consuming or inconvenient to compute subgroup averages. In these cases, a(n) ________ is used.

Which of the following is true of nonrandom variation?

The ________ reflects a population distribution.

Design a control chart to monitor the gas mileage in your car. Collect the data over time.

If a systematic sample is performed according to sequence, the product is inspected at regular intervals of time.

Statistical process control charts are tools for monitoring process variation.

Process charts are graphs designed to signal process workers when nonrandom variation is occurring in a process.

Consumer's risk is also called a ________ error.

The upper and lower specifications for metal head plates are 5 0.1 cm. A sample of the metal head plates in 25 undergraduates yields a mean of 5.05. We know that the population standard deviation is 0.04. What is the population capability index?

A g chart is useful when data are hypergeometrically distributed.

Consumer's risk happens when statistical quality analysis fails to result in the scrapping or reworking of a defective product.

________ are often used in monitoring the production of silicon chips for computers.

The s chart is often used where variation in a process is large.

Differing Perspectives on Quality

Quality Theory

Global Supply Chain Quality and International Quality Standards

Strategic Quality Planning

The Voice of the Customer

The Voice of the Market

Quality and Innovation in Product and Process Design

Designing Quality Services

Managing Supplier Quality in the Supply Chain

The Tools of Quality

Statistically Based Quality Improvement for Attributes

Six Sigma Management and Lean Tools

Managing Quality Improvement Teams and Projects

Implementing and Validating the Quality System

Filters

Exam 11: Statistically Based Quality Improvement for Variables

One hundred percent samples are also known as screening samples.

In a variables control chart, large jumps of more than three or four standard deviations result in process drift.

Process stability refers to the ability of a process to produce a product that meets specification.

________ are tools for monitoring process variation.

Although xˉ \bar{x} xˉ charts generally are preferred for variables data, sometimes it is too time consuming or inconvenient to compute subgroup averages. In these cases, a(n) ________ is used.

Which of the following is true of nonrandom variation?

The ________ reflects a population distribution.

Design a control chart to monitor the gas mileage in your car. Collect the data over time.

If a systematic sample is performed according to sequence, the product is inspected at regular intervals of time.

Statistical process control charts are tools for monitoring process variation.

Process charts are graphs designed to signal process workers when nonrandom variation is occurring in a process.

Consumer's risk is also called a ________ error.

The upper and lower specifications for metal head plates are 5 0.1 cm. A sample of the metal head plates in 25 undergraduates yields a mean of 5.05. We know that the population standard deviation is 0.04. What is the population capability index?

A g chart is useful when data are hypergeometrically distributed.

Consumer's risk happens when statistical quality analysis fails to result in the scrapping or reworking of a defective product.

________ are often used in monitoring the production of silicon chips for computers.

The s chart is often used where variation in a process is large.

Differing Perspectives on Quality

Quality Theory

Global Supply Chain Quality and International Quality Standards

Strategic Quality Planning

The Voice of the Customer

The Voice of the Market

Quality and Innovation in Product and Process Design

Designing Quality Services

Managing Supplier Quality in the Supply Chain

The Tools of Quality

Statistically Based Quality Improvement for Attributes

Six Sigma Management and Lean Tools

Managing Quality Improvement Teams and Projects

Implementing and Validating the Quality System

Filters

Although $\bar{x}$ charts generally are preferred for variables data, sometimes it is too time consuming or inconvenient to compute subgroup averages. In these cases, a(n) ________ is used.