Question 1

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   -chart and R-charts. 
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   -chart and R-charts.

Question 2

Which of the following pairs of charts are used together?

Accepted Answer

A)    -chart and p-chart 
B) R-chart and p-chart 
C) R-chart and s-chart 
D)    -chart and R-chart 
A)    -chart and p-chart 
B) R-chart and p-chart 
C) R-chart and s-chart 
D)    -chart and R-chart

Question 3

In the application of control charts,as the sample size is increased:

Accepted Answer

A) Type I errors are reduced, and Type II errors are increased. 
B) Type I errors are increased, and Type II errors are reduced. 
C) both Type I and Type II errors are increased. 
D) both Type I and Type II errors are reduced. 
A) Type I errors are reduced, and Type II errors are increased. 
B) Type I errors are increased, and Type II errors are reduced. 
C) both Type I and Type II errors are increased. 
D) both Type I and Type II errors are reduced.

Question 4

If the lower limit for a p-chart computes to a number less than zero,this indicates:

Accepted Answer

A) that a calculation error has been made. 
B) an out of control process. 
C) an incorrect use of an attribute measure. 
D) that the limit should be set at zero. 
A) that a calculation error has been made. 
B) an out of control process. 
C) an incorrect use of an attribute measure. 
D) that the limit should be set at zero.

Question 5

Assignable causes are more difficult to identify in unstable processes.

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

The text provides a decision flow chart

Question 7

Collecting _____ data is usually easier than collecting _____ data because the assessment can usually be done more quickly by a simple inspection or count.

Accepted Answer

A) attribute; variable 
B) concrete; continuous 
C) random; discrete 
D) simple; continuous 
A) attribute; variable 
B) concrete; continuous 
C) random; discrete 
D) simple; continuous

Question 8

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 9

For variables data,the necessary sample size can be estimated by specifying the desired minimum shift in the process mean to be detected.

Accepted Answer

A) True 
 B)False

Question 10

Control limits for variables and attribute data utilize the same mathematical formulas.

Accepted Answer

A) True 
 B)False

Question 11

If all the points on a control chart are within the control limits,then the process is in statistical control.

Accepted Answer

A) True 
 B)False

Question 12

A process is deemed "out of control" when:

Accepted Answer

A) common causes are present. 
B) special causes are present. 
C) data varies around the mean. 
D) random variation is present. 
A) common causes are present. 
B) special causes are present. 
C) data varies around the mean. 
D) random variation is present.

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

In the manufacture of vitamin capsules, the proportion of calcium in each capsule has a specification of   parts per million (ppm). A random sample of 100 capsules revealed a sample average calcium content of 44.5 ppm and a sample standard deviation of 3.2 ppm. Management uses   and R-charts to monitor the calcium amount using samples of size 4. The charts depict an in-control process.
The centerline of the R chart is 6.7 and the centerline of the   chart is 44.8.

a Compute   for this process using estimates of the process mean and standard
deviation derived from the random sample.

b. Compute   for this process using estimates of the process mean and standard
deviation derived from the control chart parameters.

c. Compute   for this process using estimates of the process mean and standard
deviation derived from the random sample.

. Compute   for this process using estimates of the process mean and standard
deviation derived from the control chart parameters

d. What do the differences between the values of   and   tell you?

Accepted Answer

a. @#LAT-DLM&
b. @#LAT-DLM&
c. @#LAT-DLM& and @#LAT-DLM&
Therefore, @#LAT-DLM&.

Question 15

Control limits are often confused with _____.

Accepted Answer

A) control charts 
B) tolerance limits 
C) specification limits 
D) variance limits 
A) control charts 
B) tolerance limits 
C) specification limits 
D) variance limits

Question 16

In service applications,we generally use the term _____ to describe a nonconformance.

Accepted Answer

A) error 
B) defect 
C) mistake 
D) concern 
A) error 
B) defect 
C) mistake 
D) concern

Question 17

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

Accepted Answer

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

Question 18

The control chart most appropriate for data that represent the average number of packing slip errors per package shipped each day is the:

Accepted Answer

A) np-chart. 
B) u-chart. 
C) p-chart. 
D) x-chart. 
A) np-chart. 
B) u-chart. 
C) p-chart. 
D) x-chart.

Question 19

Variable data are _____.

Accepted Answer

A) discrete 
B) discontinuous 
C) random 
D) continuous 
A) discrete 
B) discontinuous 
C) random 
D) continuous

Question 20

Histograms allow you to distinguish between common and special causes of variation.

Accepted Answer

A) True 
 B)False

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

Which of the following pairs of charts are used together?

In the application of control charts,as the sample size is increased:

If the lower limit for a p-chart computes to a number less than zero,this indicates:

Assignable causes are more difficult to identify in unstable processes.

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

Collecting _ data is usually easier than collecting _ data because the assessment can usually be done more quickly by a simple inspection or count.

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

For variables data,the necessary sample size can be estimated by specifying the desired minimum shift in the process mean to be detected.

Control limits for variables and attribute data utilize the same mathematical formulas.

If all the points on a control chart are within the control limits,then the process is in statistical control.

A process is deemed "out of control" when:

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

Control limits are often confused with _____.

In service applications,we generally use the term _____ to describe a nonconformance.

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

The control chart most appropriate for data that represent the average number of packing slip errors per package shipped each day is the:

Variable data are _____.

Histograms allow you to distinguish between common and special causes of variation.

Introduction

Total Quality In Organizations

Philosophies And Frameworks

Strategic Focus For Performance Excellence

Focusing On Customers

High Performance Workforce Management

Process Management

Performance Measurement And Information Management

Leading, building, and Sustaining Performance Excellence

Statistical Thinking And Applications

Six Sigma And Process Improvement

Design For Quality And Product Excellence

Filters

Exam 13: Statistical Process Control

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

Which of the following pairs of charts are used together?

In the application of control charts,as the sample size is increased:

If the lower limit for a p-chart computes to a number less than zero,this indicates:

Assignable causes are more difficult to identify in unstable processes.

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

Collecting _____ data is usually easier than collecting _____ data because the assessment can usually be done more quickly by a simple inspection or count.

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

For variables data,the necessary sample size can be estimated by specifying the desired minimum shift in the process mean to be detected.

Control limits for variables and attribute data utilize the same mathematical formulas.

If all the points on a control chart are within the control limits,then the process is in statistical control.

A process is deemed "out of control" when:

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

Control limits are often confused with _____.

In service applications,we generally use the term _____ to describe a nonconformance.

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

The control chart most appropriate for data that represent the average number of packing slip errors per package shipped each day is the:

Variable data are _____.

Histograms allow you to distinguish between common and special causes of variation.

Introduction

Total Quality In Organizations

Philosophies And Frameworks

Strategic Focus For Performance Excellence

Focusing On Customers

High Performance Workforce Management

Process Management

Performance Measurement And Information Management

Leading, building, and Sustaining Performance Excellence

Statistical Thinking And Applications

Six Sigma And Process Improvement

Design For Quality And Product Excellence

Filters

Collecting _ data is usually easier than collecting _ data because the assessment can usually be done more quickly by a simple inspection or count.