Question 1

A ___________ is a set of process observations that are examined for the purpose of constructing control charts.

Accepted Answer

A) Subgroup 
B) Sample 
C) Zone 
D) List of common causes 
A) Subgroup 
B) Sample 
C) Zone 
D) List of common causes

Question 2

If a control chart is used correctly and the necessary corrective actions are taken,then as the control limits get close to each other,the potential quality of the product _____________.

Accepted Answer

A) decreases 
B) increases 
C) stays the same 
D) fluctuates 
A) decreases 
B) increases 
C) stays the same 
D) fluctuates

Question 3

A motorcycle manufacturer produces the parts for its vehicles in different locations and transports them to its plant for assembly.To keep the assembly operations running efficiently,it is vital that all parts be within specification limits.One important part used in the assembly is the engine camshaft,and one important quality characteristic is the case hardness depth.Specifications state that the hardness depth must be between 3.0 mm and 6.0 mm.To investigate the process,the quality control engineer selected 25 daily subgroups of n = 5 and measured the hardness depth.The process yielded a mean of the means $\overline { \overline{ x } }$

= 4)50 and an average range = 1.01.Calculate the center line for the X-bar chart.

Accepted Answer

A) 1.01 
B) 4.50 
C) 3.49 
D) 0.90 
A) 1.01 
B) 4.50 
C) 3.49 
D) 0.90

Question 4

How well a process is able to meet the requirements set forth by the process design is called:

Accepted Answer

A) Process leeway. 
B) Quality of conformance. 
C) Quality of performance. 
D) Quality of design. 
A) Process leeway. 
B) Quality of conformance. 
C) Quality of performance. 
D) Quality of design.

Question 5

___________ causes of variation may be remedied by local supervision.

Accepted Answer

A) Common 
B) Assignable 
C) Usual 
D) Expected 
A) Common 
B) Assignable 
C) Usual 
D) Expected

Question 6

If the ________ limits are within the ________ limits,then it can be concluded that the process is __________.

Accepted Answer

A) Specification,natural,capable 
B) Natural,specification,stable 
C) Specification,natural,stable 
D) Natural,specification,capable 
A) Specification,natural,capable 
B) Natural,specification,stable 
C) Specification,natural,stable 
D) Natural,specification,capable

Question 7

A goal of statistical process control is continuous process improvement.

Accepted Answer

A) True 
 B)False

Question 8

An $\bar { X }$ 
chart is a control chart on which individual process measurements are plotted versus time.

Accepted Answer

A) True 
 B)False

Question 9

If 20 samples of size 7 are drawn,with $\overline { \overline X }$

= 33.33 and $\bar { R }$
= 5)65,what is the A-B upper boundary for the $\bar { X }$
Chart?

Accepted Answer

A) 35.697 
B) 34.908 
C) 34.347 
D) 34.008 
A) 35.697 
B) 34.908 
C) 34.347 
D) 34.008

Question 10

If a process is only influenced by common causes of variation,we can state that the process is in statistical control.

Accepted Answer

A) True 
 B)False

Question 11

A(n)____________ process has the ability to produce products or services that meet customer requirements.

Accepted Answer

A) in-control 
B) assignable 
C) capable 
D) statistical 
A) in-control 
B) assignable 
C) capable 
D) statistical

Question 12

A range chart is a control chart on which ranges between individual process measurements within a subgroup are plotted.

Accepted Answer

A) True 
 B)False

Question 13

_________ is the set of international standards on quality management and quality assurance systems.It establishes processes for assuring that goods and services offered by the company meet a consistent level of quality acceptable to customers.

Accepted Answer

A) Control Charting 
B) SQC 
C) ISO 9000 
D) ASQC 
A) Control Charting 
B) SQC 
C) ISO 9000 
D) ASQC

Question 14

When using $\bar { X }$ 
and R charts to analyze and improve a process,first,the $\bar { X }$ 
chart is analyzed and the necessary action(s)to correct assignable causes of variation is (are)taken before the R chart is analyzed.

Accepted Answer

A) True 
 B)False

Question 15

Observing the output of a process at fixed time intervals is referred to as ___________ sampling.

Accepted Answer

A) Consecutive 
B) Random 
C) Fixed 
D) Periodic 
A) Consecutive 
B) Random 
C) Fixed 
D) Periodic

Question 16

The quality of an electronic component used in manufacturing cell phones is monitored with a p chart.In the last 20 days,daily samples of 75 units resulted in the following number of defective units per sample: 8,4,3,7,3,1,0,7,4,2,0,1,6,2,4,3,1,2,8,and 5.Find the appropriate center line.

Accepted Answer

A) .0473 
B) .2667 
C) .1067 
D) .0133 
A) .0473 
B) .2667 
C) .1067 
D) .0133

Question 17

Reducing common causes of variation usually requires action by management.

Accepted Answer

A) True 
 B)False

Question 18

If a process is stable and in statistical control,it is not influenced by assignable causes of variation.

Accepted Answer

A) True 
 B)False

Question 19

A powder metal manufacturing company is producing sleeves for a locking mechanism.The target (nominal)value for the inside diameter is 1 inch.The inside diameter specifications are 1 ± .005 inches.Assume that the process is in statistical control with $\overline { \overline  X }$ 
= 1)0002 inches, $\overline { \mathrm { R } }$
= )003 inches,and subgroup size of 5.Calculate the control limits for the $\overline { X }$

Chart.

Accepted Answer

A) .99781 to 1.00219 
B) .99801 to 1.00238 
C) .99830 to 1.00713 
D) .99847 to 1.00193 
E) .995 to 1.005 
A) .99781 to 1.00219 
B) .99801 to 1.00238 
C) .99830 to 1.00713 
D) .99847 to 1.00193 
E) .995 to 1.005

Question 20

A motorcycle manufacturer produces the parts for its vehicles in different locations and transports them to its plant for assembly.To keep the assembly operations running efficiently,it is vital that all parts be within specification limits.One important part used in the assembly is the engine camshaft,and one important quality characteristic is the case hardness depth.Specifications state that the hardness depth must be between 3.0 mm and 6.0 mm.To investigate the process,the quality control engineer selected 25 daily subgroups of n = 5 and measured the hardness depth.The process yielded a mean of the means $\overline { \overline{ x } }$

= 4)50 and an average range = 1.01.Is the process capable of meeting the specifications?

Accepted Answer

A) Yes 
B) No 
A) Yes 
B) No

A ___________ is a set of process observations that are examined for the purpose of constructing control charts.

If a control chart is used correctly and the necessary corrective actions are taken,then as the control limits get close to each other,the potential quality of the product _____________.

How well a process is able to meet the requirements set forth by the process design is called:

___________ causes of variation may be remedied by local supervision.

If the limits are within the limits,then it can be concluded that the process is __.

A goal of statistical process control is continuous process improvement.

An $\bar { X }$ chart is a control chart on which individual process measurements are plotted versus time.

If 20 samples of size 7 are drawn,with $\overline { \overline X }$ = 33.33 and $\bar { R }$ = 5)65,what is the A-B upper boundary for the $\bar { X }$ Chart?

If a process is only influenced by common causes of variation,we can state that the process is in statistical control.

A(n)____________ process has the ability to produce products or services that meet customer requirements.

A range chart is a control chart on which ranges between individual process measurements within a subgroup are plotted.

_________ is the set of international standards on quality management and quality assurance systems.It establishes processes for assuring that goods and services offered by the company meet a consistent level of quality acceptable to customers.

When using $\bar { X }$ and R charts to analyze and improve a process,first,the $\bar { X }$ chart is analyzed and the necessary action(s)to correct assignable causes of variation is (are)taken before the R chart is analyzed.

Observing the output of a process at fixed time intervals is referred to as ___________ sampling.

The quality of an electronic component used in manufacturing cell phones is monitored with a p chart.In the last 20 days,daily samples of 75 units resulted in the following number of defective units per sample: 8,4,3,7,3,1,0,7,4,2,0,1,6,2,4,3,1,2,8,and 5.Find the appropriate center line.

Reducing common causes of variation usually requires action by management.

If a process is stable and in statistical control,it is not influenced by assignable causes of variation.

Statistical Inferences for Population Variances

Experimental Design and Analysis of Variance

Chi-Square Tests

Simple Linear Regression Analysis

Multiple Regression and Model Building

Time Series Forecasting and Index Numbers

Nonparametric Methods

Decision Theory

Filters

Exam 17: Process Improvement Using Control Charts

A ___________ is a set of process observations that are examined for the purpose of constructing control charts.

If a control chart is used correctly and the necessary corrective actions are taken,then as the control limits get close to each other,the potential quality of the product _____________.

How well a process is able to meet the requirements set forth by the process design is called:

___________ causes of variation may be remedied by local supervision.

If the ________ limits are within the ________ limits,then it can be concluded that the process is __________.

A goal of statistical process control is continuous process improvement.

An Xˉ\bar { X }Xˉ chart is a control chart on which individual process measurements are plotted versus time.

If 20 samples of size 7 are drawn,with X‾‾\overline { \overline X }X = 33.33 and Rˉ\bar { R }Rˉ = 5)65,what is the A-B upper boundary for the Xˉ\bar { X }Xˉ Chart?

If a process is only influenced by common causes of variation,we can state that the process is in statistical control.

A(n)____________ process has the ability to produce products or services that meet customer requirements.

A range chart is a control chart on which ranges between individual process measurements within a subgroup are plotted.

_________ is the set of international standards on quality management and quality assurance systems.It establishes processes for assuring that goods and services offered by the company meet a consistent level of quality acceptable to customers.

When using Xˉ\bar { X }Xˉ and R charts to analyze and improve a process,first,the Xˉ\bar { X }Xˉ chart is analyzed and the necessary action(s)to correct assignable causes of variation is (are)taken before the R chart is analyzed.

Observing the output of a process at fixed time intervals is referred to as ___________ sampling.

The quality of an electronic component used in manufacturing cell phones is monitored with a p chart.In the last 20 days,daily samples of 75 units resulted in the following number of defective units per sample: 8,4,3,7,3,1,0,7,4,2,0,1,6,2,4,3,1,2,8,and 5.Find the appropriate center line.

Reducing common causes of variation usually requires action by management.

If a process is stable and in statistical control,it is not influenced by assignable causes of variation.

Statistical Inferences for Population Variances

Experimental Design and Analysis of Variance

Chi-Square Tests

Simple Linear Regression Analysis

Multiple Regression and Model Building

Time Series Forecasting and Index Numbers

Nonparametric Methods

Decision Theory

Filters

If the limits are within the limits,then it can be concluded that the process is __.

An $\bar { X }$ chart is a control chart on which individual process measurements are plotted versus time.

If 20 samples of size 7 are drawn,with $\overline { \overline X }$ = 33.33 and $\bar { R }$ = 5)65,what is the A-B upper boundary for the $\bar { X }$ Chart?

When using $\bar { X }$ and R charts to analyze and improve a process,first,the $\bar { X }$ chart is analyzed and the necessary action(s)to correct assignable causes of variation is (are)taken before the R chart is analyzed.