Question 1

Discuss the differences between attributes and variables data.

Accepted Answer

Attributes data is less efficient than v

Question 2

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 3

Process capability indices cannot be computed from data in an   
-chart.

Accepted Answer

A) True 
 B)False

Question 4

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) -chart. 
B) R-chart. 
C) p-chart. 
D) u-chart. 
A) -chart. 
B) R-chart. 
C) p-chart. 
D) u-chart.

Question 5

Which of the following charts is used to monitor the average number of nonconformances per unit when sample sizes vary?

Accepted Answer

A) -chart 
B) c-chart 
C) p-chart 
D) u-chart 
A) -chart 
B) c-chart 
C) p-chart 
D) u-chart

Question 6

What is the conclusion Kroger company arrived at after initiating the Lean Six Sigma project?

Accepted Answer

One of Kroger's goals is to distribute o

Question 7

For variables data,the sample means are assumed to be:

Accepted Answer

A) exponentially distributed. 
B) normally distributed. 
C) Poisson distributed. 
D) binomially distributed. 
A) exponentially distributed. 
B) normally distributed. 
C) Poisson distributed. 
D) binomially distributed.

Question 8

A precision parts manufacturer produces bolts for use in military aircraft.The specifications for bolt length are 37.50  $\pm$ 0.25 cm.The company has established an  
-chart and an R-chart using samples of size five.The center lines for the  
-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 9

_____ is a study of variation in a measurement system using statistical analysis.

Accepted Answer

A) Metrology study 
B) SPC study 
C) Calibration study 
D) A repeatability and reproducibility (R&R) study 
A) Metrology study 
B) SPC study 
C) Calibration study 
D) A repeatability and reproducibility (R&R) study

Question 10

Which of the following is a likely cause of the control chart pattern known as a "trend?"

Accepted Answer

A) Aging equipment 
B) Maintenance schedules 
C) New process operator 
D) Sudden power surge 
A) Aging equipment 
B) Maintenance schedules 
C) New process operator 
D) Sudden power surge

Question 11

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 12

Process capability calculations make little sense if the process:

Accepted Answer

A) data were taken over a period of time. 
B) is not in statistical control. 
C) variations are due to common causes. 
D) is not initiated. 
A) data were taken over a period of time. 
B) is not in statistical control. 
C) variations are due to common causes. 
D) is not initiated.

Question 13

A(n) _____ characterizes the presence or absence of nonconformances in a unit of work.

Accepted Answer

A) variable 
B) indicator 
C) attribute 
D) error 
A) variable 
B) indicator 
C) attribute 
D) error

Question 14

A bank recently took 32 random samples of size 600 to determine the accuracy of its customer records.A customer record was considered to be nonconforming if any portion of the record was left blank.The sample data are presented below.Determine the control limits for an np-chart.

Accepted Answer

n @#IMG-DLM& 
= @#IMG-DLM& 
= (21 + 22 + 20 + … +

Question 15

An alternative to using the R-chart is the:

Accepted Answer

A) np-chart. 
B) s-chart. 
C) c-chart. 
D) p-chart. 
A) np-chart. 
B) s-chart. 
C) c-chart. 
D) p-chart.

Question 16

A precision parts manufacturer produces bolts for use in military aircraft.The specifications for bolt length are 37.50  $\pm$ 0.25 cm.The company has established an  
-chart and an R-chart using samples of size five.The center lines for the  
-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) 0.179 
B) 1.333 
C) 0.301 
D) 0.166 
A) 0.179 
B) 1.333 
C) 0.301 
D) 0.166

Question 17

A machined part has a lower specification limit of 3.5 inches and an upper specification limit of 3.9 inches.The range for the pre-control green zone is:

Accepted Answer

A) 3.5 inches to 3.9 inches. 
B) 3.8 inches to 3.9 inches. 
C) less than 3.5 inches. 
D) 3.6 inches to 3.8 inches. 
A) 3.5 inches to 3.9 inches. 
B) 3.8 inches to 3.9 inches. 
C) less than 3.5 inches. 
D) 3.6 inches to 3.8 inches.

Question 18

Twenty samples of size 6 were collected for a variable measurement.Determine the upper control limit (UCL) and lower control limit (LCL) for an R-chart if the sum of the sample ranges equals 88.0.

Accepted Answer

A) UCL = 8.8176,LCL = 0.0000 
B) UCL = 9.3016,LCL = 0.3344 
C) UCL = 13.2000,LCL = 0.0000 
D) UCL = 29.3921,LCL = 0.0000 
A) UCL = 8.8176,LCL = 0.0000 
B) UCL = 9.3016,LCL = 0.3344 
C) UCL = 13.2000,LCL = 0.0000 
D) UCL = 29.3921,LCL = 0.0000

Question 19

Which of the following is CORRECT regarding an x-chart?

Accepted Answer

A) Individual data require averaging before being plotted on it. 
B) It is less sensitive to many conditions that can be detected by-chart and R-chart. 
C) Specification limits cannot be drawn on the chart for direct comparison with the control limits. 
D) The assumption of normality of observations is less critical than for 
A) Individual data require averaging before being plotted on it. 
B) It is less sensitive to many conditions that can be detected by-chart and R-chart. 
C) Specification limits cannot be drawn on the chart for direct comparison with the control limits. 
D) The assumption of normality of observations is less critical than for

Question 20

The frequency of sampling in pre-control is often determined by dividing the time period between two successive out-of-control signals by six.

Accepted Answer

A) True 
 B)False

Discuss the differences between attributes and variables data.

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

Process capability indices cannot be computed from data in an -chart.

Which of the following charts is used to monitor the average number of nonconformances per unit when sample sizes vary?

What is the conclusion Kroger company arrived at after initiating the Lean Six Sigma project?

For variables data,the sample means are assumed to be:

_____ is a study of variation in a measurement system using statistical analysis.

Which of the following is a likely cause of the control chart pattern known as a "trend?"

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.

Process capability calculations make little sense if the process:

A(n) _____ characterizes the presence or absence of nonconformances in a unit of work.

A bank recently took 32 random samples of size 600 to determine the accuracy of its customer records.A customer record was considered to be nonconforming if any portion of the record was left blank.The sample data are presented below.Determine the control limits for an np-chart.

An alternative to using the R-chart is the:

A machined part has a lower specification limit of 3.5 inches and an upper specification limit of 3.9 inches.The range for the pre-control green zone is:

Twenty samples of size 6 were collected for a variable measurement.Determine the upper control limit (UCL) and lower control limit (LCL) for an R-chart if the sum of the sample ranges equals 88.0.

Which of the following is CORRECT regarding an x-chart?

The frequency of sampling in pre-control is often determined by dividing the time period between two successive out-of-control signals by six.

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

Discuss the differences between attributes and variables data.

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

Process capability indices cannot be computed from data in an -chart.

Which of the following charts is used to monitor the average number of nonconformances per unit when sample sizes vary?

What is the conclusion Kroger company arrived at after initiating the Lean Six Sigma project?

For variables data,the sample means are assumed to be:

_____ is a study of variation in a measurement system using statistical analysis.

Which of the following is a likely cause of the control chart pattern known as a "trend?"

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.

Process capability calculations make little sense if the process:

A(n) _____ characterizes the presence or absence of nonconformances in a unit of work.

A bank recently took 32 random samples of size 600 to determine the accuracy of its customer records.A customer record was considered to be nonconforming if any portion of the record was left blank.The sample data are presented below.Determine the control limits for an np-chart.

An alternative to using the R-chart is the:

A machined part has a lower specification limit of 3.5 inches and an upper specification limit of 3.9 inches.The range for the pre-control green zone is:

Twenty samples of size 6 were collected for a variable measurement.Determine the upper control limit (UCL) and lower control limit (LCL) for an R-chart if the sum of the sample ranges equals 88.0.

Which of the following is CORRECT regarding an x-chart?

The frequency of sampling in pre-control is often determined by dividing the time period between two successive out-of-control signals by six.

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