Question 1

In pre-control,which zone covers the nominal specification of a process?

Accepted Answer

A) Gray zone 
B) Green zone 
C) Red zone 
D) Yellow zone 
A) Gray zone 
B) Green zone 
C) Red zone 
D) Yellow zone

Question 2

If points on a control chart are determined to be the result of special causes,the points should be eliminated and new control limits should be computed.

Accepted Answer

A) True 
 B)False

Question 3

Variable data are _____.

Accepted Answer

A) discrete 
B) not measurable 
C) continuous 
D) nonrandom 
A) discrete 
B) not measurable 
C) continuous 
D) nonrandom

Question 4

A precision parts manufacturer produces bolts for use in military aircraft.The specifications for bolt length are 37.50 ± 0.25 cm.The company has established an $ \bar{x} $ -chart and an R-chart using samples of size five.The center lines for the $ \bar{x} $ -chart and R-chart are set at 37.35 cm and 1.05 cm,respectively.What is the value of Cpk for this process?

Accepted Answer

A) 0.07 
B) 0.28 
C) 0.75 
D) 0.03 
A) 0.07 
B) 0.28 
C) 0.75 
D) 0.03

Question 5

Control limits for variables and attributes data utilize different mathematical formulas.

Accepted Answer

A) True 
 B)False

Question 6

A "hugging the center line" pattern in a control chart can be the result of taking each sample from a different process but not mixed together.

Accepted Answer

A) True 
 B)False

Question 7

x-charts are used for:

Accepted Answer

A) averages of variables data. 
B) individual attributes data. 
C) individual variables data. 
D) averages of attributes data. 
A) averages of variables data. 
B) individual attributes data. 
C) individual variables data. 
D) averages of attributes data.

Question 8

A precision parts manufacturer produces bolts for use in military aircraft.The specifications for bolt length are 37.50 ± 0.25 cm.The company has established an $ \bar{x} $ -chart and an R-chart using samples of size five.The center lines for the $ \bar{x} $ -chart and R-chart are set at 35.25 cm and 1.08 cm,respectively.What is the value of Cp for this process?

Accepted Answer

A) 1.333 
B) 0.179 
C) 0.301 
D) 0.166 
A) 1.333 
B) 0.179 
C) 0.301 
D) 0.166

Question 9

Construct a flow chart that illustrates the decision process for selecting the appropriate control chart(s)for monitoring a given process.

Accepted Answer

The decision flow chart for proper contr

Question 10

A company wishes to monitor the variation in the length of time it takes to process and send a bill to a customer.Seven bills will be randomly selected each day for a 60-day period and the length of time it takes to process and send the bill to a customer will be recorded for each bill.The appropriate control chart is a(n):

Accepted Answer

A)  $ \bar{x} $ -chart. 
B) R-chart. 
C) p-chart. 
D) u-chart. 
A)  $ \bar{x} $ -chart. 
B) R-chart. 
C) p-chart. 
D) u-chart.

Question 11

The larger the sample size,the narrower the control limits.

Accepted Answer

A) True 
 B)False

Question 12

The center line for the np-chart is the average number of nonconforming items per sample.

Accepted Answer

A) True 
 B)False

Question 13

A quality engineer took 40 samples of 100 transistors each from the output of an assembly line.Each transistor was tested and the number of defectives in each sample is recorded in the table below.Determine the control chart limits for a p-chart.

Accepted Answer

The answer of A quality engineer took 40 samples of...

Question 14

A better alternative to the $ \bar{x} $ -chart to monitor variation is to compute and plot the standard deviation s of each sample.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is a major advantage of np-charts?

Accepted Answer

A) They can be used for variable sample sizes. 
B) They are more accurate than p-charts. 
C) They are easier to understand for production personnel. 
D) The control limits are based on binomial distribution. 
A) They can be used for variable sample sizes. 
B) They are more accurate than p-charts. 
C) They are easier to understand for production personnel. 
D) The control limits are based on binomial distribution.

Question 16

Which of the following is NOT an indication of an out-of-control process?

Accepted Answer

A) Five consecutive points fall on one side of the center line. 
B) Four of five consecutive points fall within the outer two-thirds region between the center line and one of the control limits. 
C) Two of three consecutive points fall in the outer one-third region between the center line and one of the control limits. 
D) A single point falls above the upper control limit. 
A) Five consecutive points fall on one side of the center line. 
B) Four of five consecutive points fall within the outer two-thirds region between the center line and one of the control limits. 
C) Two of three consecutive points fall in the outer one-third region between the center line and one of the control limits. 
D) A single point falls above the upper control limit.

Question 17

Attribute measurement requires a much larger sample size than variable measurement to obtain the same amount of statistical information.

Accepted Answer

A) True 
 B)False

Question 18

A specification is 50.0 cm ± 10.0 cm.Sketch and label the pre-control zones for this specification.Include the following values on your sketch: nominal,upper and lower specification limits,and end points of the green zone.

Accepted Answer

The answer of A specification is 50.0 cm ± 10.0...

Question 19

What were some of the errors that the analysis uncovered at the distributor?

Accepted Answer

Errors involving handling packages at th

Question 20

Defects per million opportunities (dpmo)= _____.

Accepted Answer

A) (Number of defects discovered / Opportunities for error) x 100,000 
B) (Number of defects discovered / Opportunities for error) x1,000,000 
C) Opportunities for error x Number of defects discovered / 1,000,000 
D) Opportunities for error / (Number of defects discovered x 10,000,000) 
A) (Number of defects discovered / Opportunities for error) x 100,000 
B) (Number of defects discovered / Opportunities for error) x1,000,000 
C) Opportunities for error x Number of defects discovered / 1,000,000 
D) Opportunities for error / (Number of defects discovered x 10,000,000)

In pre-control,which zone covers the nominal specification of a process?

If points on a control chart are determined to be the result of special causes,the points should be eliminated and new control limits should be computed.

Variable data are _____.

Control limits for variables and attributes data utilize different mathematical formulas.

A "hugging the center line" pattern in a control chart can be the result of taking each sample from a different process but not mixed together.

x-charts are used for:

Construct a flow chart that illustrates the decision process for selecting the appropriate control chart(s)for monitoring a given process.

The larger the sample size,the narrower the control limits.

The center line for the np-chart is the average number of nonconforming items per sample.

A quality engineer took 40 samples of 100 transistors each from the output of an assembly line.Each transistor was tested and the number of defectives in each sample is recorded in the table below.Determine the control chart limits for a p-chart.

A better alternative to the $\bar{x}$ -chart to monitor variation is to compute and plot the standard deviation s of each sample.

Which of the following is a major advantage of np-charts?

Which of the following is NOT an indication of an out-of-control process?

Attribute measurement requires a much larger sample size than variable measurement to obtain the same amount of statistical information.

A specification is 50.0 cm ± 10.0 cm.Sketch and label the pre-control zones for this specification.Include the following values on your sketch: nominal,upper and lower specification limits,and end points of the green zone.

What were some of the errors that the analysis uncovered at the distributor?

Defects per million opportunities (dpmo)= _____.

Introduction to Quality

Foundations of Quality Management

Customer Focus

Workforce Focus

Process Focus

Statistical Methods in Quality Management

Design for Quality and Product Excellence

Process Improvement and Six Sigma

The Baldrige Framework for Performance Excellence

Strategy and Performance Excellence

Measurement and Knowledge Management for Performance Excellence

Leadership for Performance Excellence

Building and Sustaining Quality and Performance Excellence

Filters

Exam 8: Measuring and Controlling Quality

In pre-control,which zone covers the nominal specification of a process?

If points on a control chart are determined to be the result of special causes,the points should be eliminated and new control limits should be computed.

Variable data are _____.

Control limits for variables and attributes data utilize different mathematical formulas.

A "hugging the center line" pattern in a control chart can be the result of taking each sample from a different process but not mixed together.

x-charts are used for:

Construct a flow chart that illustrates the decision process for selecting the appropriate control chart(s)for monitoring a given process.

The larger the sample size,the narrower the control limits.

The center line for the np-chart is the average number of nonconforming items per sample.

A quality engineer took 40 samples of 100 transistors each from the output of an assembly line.Each transistor was tested and the number of defectives in each sample is recorded in the table below.Determine the control chart limits for a p-chart.

A better alternative to the xˉ \bar{x} xˉ -chart to monitor variation is to compute and plot the standard deviation s of each sample.

Which of the following is a major advantage of np-charts?

Which of the following is NOT an indication of an out-of-control process?

Attribute measurement requires a much larger sample size than variable measurement to obtain the same amount of statistical information.

A specification is 50.0 cm ± 10.0 cm.Sketch and label the pre-control zones for this specification.Include the following values on your sketch: nominal,upper and lower specification limits,and end points of the green zone.

What were some of the errors that the analysis uncovered at the distributor?

Defects per million opportunities (dpmo)= _____.

Introduction to Quality

Foundations of Quality Management

Customer Focus

Workforce Focus

Process Focus

Statistical Methods in Quality Management

Design for Quality and Product Excellence

Process Improvement and Six Sigma

The Baldrige Framework for Performance Excellence

Strategy and Performance Excellence

Measurement and Knowledge Management for Performance Excellence

Leadership for Performance Excellence

Building and Sustaining Quality and Performance Excellence

Filters

A better alternative to the $\bar{x}$ -chart to monitor variation is to compute and plot the standard deviation s of each sample.