Question 1

Sampling inspection by attributes:

Accepted Answer

A) Means each item sampled is classified as defective or not defective based on quality standards 
B) Could be used together with process control and variable measurement as part of a quality control system 
C) Utilizes a discrete scale of measurement 
D) a,b,and c 
A) Means each item sampled is classified as defective or not defective based on quality standards 
B) Could be used together with process control and variable measurement as part of a quality control system 
C) Utilizes a discrete scale of measurement 
D) a,b,and c D

Question 2

A process for filling liquid laundry detergent bottles monitors the volume in each bottle.The Operations Manager has taken 5 samples with 4 observations (bottles)in each sample to determine if the variation in volume is reasonable.The measurement unit is fluid ounces.Calculate the center line for a process control chart that indicates whether the variation within samples is reasonable (in a state of control). $$\begin{array} { | c | c | c | c | c | c | } 
\hline \text { Bottle } & \text { Sarnple 1 } & \text { Sarnple 2 } & \text { Sarnple 3 } & \text { Sarnple 4 } & \text { Sarnple 5 } \
\hline 1 & 11.8 & 12.0 & 11.8 & 11.9 & 10.7 \
\hline 2 & 12.1 & 12.0 & 11.8 & 12.0 & 11.2 \
\hline 3 & 12.0 & 11.9 & 11.9 & 11.8 & 11.9 \
\hline 4 & 12.2 & 11.8 & 11.7 & 11.9 & 11.7 \
\hline
\end{array}$$

Accepted Answer

A) >1.0 
B) Between 0 and 1.0 
C) Less than 0 
D) There is not enough information to determine the correct response 
A) >1.0 
B) Between 0 and 1.0 
C) Less than 0 
D) There is not enough information to determine the correct response B

Question 3

One of the earliest steps in designing a quality control system is to decide on:

Accepted Answer

A) The amount of inspection to use 
B) Who should do the inspection 
C) The type of measurement to be used 
D) Training workers to perform inspection on their own work 
A) The amount of inspection to use 
B) Who should do the inspection 
C) The type of measurement to be used 
D) Training workers to perform inspection on their own work C

Question 4

A complete system of quality control:

Accepted Answer

A) Is defined by critical control points,inspectors,measurements,costs,and other considerations 
B) Involves a zero defects philosophy 
C) Requires a continuous scale for measurement of defects 
D) Must include both variable and attribute measurements 
A) Is defined by critical control points,inspectors,measurements,costs,and other considerations 
B) Involves a zero defects philosophy 
C) Requires a continuous scale for measurement of defects 
D) Must include both variable and attribute measurements

Question 5

Suppose that a process is in a state of control and we have the following information for a human weights measurement study. Average weight of males in the study = 150 lbs.
Average range of the male weights = 100 lbs.
A2 = .577
D3 = 0
D4 = 2.115
What is the upper control limit for the average (mean)chart?

Accepted Answer

A) 207.7 lbs 
B) 92.3 lbs 
C) 361.5 lbs 
D) 175 lbs 
A) 207.7 lbs 
B) 92.3 lbs 
C) 361.5 lbs 
D) 175 lbs

Question 6

Which of the following techniques are used for continuous improvement?

Accepted Answer

A) Pareto charts 
B) Cause-and-effect diagrams 
C) Process control charts 
D) All of the above 
A) Pareto charts 
B) Cause-and-effect diagrams 
C) Process control charts 
D) All of the above

Question 7

Which of the following statements is NOT true about six sigma quality?

Accepted Answer

A) Six sigma results in 3.4 ppm defects 
B) Six sigma corresponds to 3 standard deviations on either side of the mean 
C) Six sigma can be applied to administrative and service processes as well 
D) Motorola invented the term "six sigma quality" in the mid-80s 
A) Six sigma results in 3.4 ppm defects 
B) Six sigma corresponds to 3 standard deviations on either side of the mean 
C) Six sigma can be applied to administrative and service processes as well 
D) Motorola invented the term "six sigma quality" in the mid-80s

Question 8

Which of the following statements about process capability is accurate?

Accepted Answer

A) Cpk is a better measure of process capability than Cp. 
B) Cp is exactly equal to Cpk when the mean is centered in the specification limits. 
C) Given the same process,Cpk is always less than or equal to Cp. 
D) All of the above are accurate. 
A) Cpk is a better measure of process capability than Cp. 
B) Cp is exactly equal to Cpk when the mean is centered in the specification limits. 
C) Given the same process,Cpk is always less than or equal to Cp. 
D) All of the above are accurate.

Question 9

A process control chart:

Accepted Answer

A) Assumes that 99.74% of special cause variation will fall between upper and lower limits 
B) Has upper and lower control limits set at $\pm$ 2 standard deviations from the center line 
C) Separates the assignable cause of variation from the common cause of variation 
D) Assigns causes of variation to operator,machine,or material 
A) Assumes that 99.74% of special cause variation will fall between upper and lower limits 
B) Has upper and lower control limits set at $\pm$ 2 standard deviations from the center line 
C) Separates the assignable cause of variation from the common cause of variation 
D) Assigns causes of variation to operator,machine,or material

Question 10

The appearance of a restaurant meal that is not satisfactory is an example of:

Accepted Answer

A) Variable measurement 
B) Mean chart 
C) Range chart 
D) Attribute measurement 
E) None of the above 
A) Variable measurement 
B) Mean chart 
C) Range chart 
D) Attribute measurement 
E) None of the above

Question 11

Lean is another term for Six Sigma process improvement.

Accepted Answer

A) True 
 B)False

Question 12

Using the information from question 8,what is the upper control limit for the range chart?

Accepted Answer

A) 57.7 lbs 
B) 211.5 lbs 
C) 317.25 lbs 
D) 86.55 lbs 
A) 57.7 lbs 
B) 211.5 lbs 
C) 317.25 lbs 
D) 86.55 lbs

Question 13

A Pareto chart:

Accepted Answer

A) Shows causes and effects of quality problems 
B) Shows the prevalence of the various types of defects that have been found 
C) Is not useful when first studying a quality problem 
D) Has both upper and lower specification limits 
A) Shows causes and effects of quality problems 
B) Shows the prevalence of the various types of defects that have been found 
C) Is not useful when first studying a quality problem 
D) Has both upper and lower specification limits

Question 14

Which of the following statements about process quality control is NOT true?

Accepted Answer

A) Assignable cause variation is also referred as special cause variation 
B) An observation outside the control limits is an example of a special cause of variation 
C) Common cause variation can be eliminated from the process by removing the potential causes 
D) The control limits will include 99.74% of the population under the normal probability distribution assuming that the process is in control 
A) Assignable cause variation is also referred as special cause variation 
B) An observation outside the control limits is an example of a special cause of variation 
C) Common cause variation can be eliminated from the process by removing the potential causes 
D) The control limits will include 99.74% of the population under the normal probability distribution assuming that the process is in control

Question 15

A machining process is capable of producing a component with an average specification of 5 inches and a process standard deviation of 0.1 inch.Suppose the customer accepts the component as long as it falls between 4.8 inches and 5.2 inches,then the process capability is:

Accepted Answer

A) 1.333 
B) 1.5 
C) 0.667 
D) 1.0 
A) 1.333 
B) 1.5 
C) 0.667 
D) 1.0

Question 16

Using the same data as in question 10,what is the lower control limit for a p-chart?

Accepted Answer

A) .0750 
B) .0191 
C) .0000 
D) .0692 
A) .0750 
B) .0191 
C) .0000 
D) .0692

Question 17

Surveys indicate that p charts are used more frequently than average (mean)and range charts are used.

Accepted Answer

A) True 
 B)False

Question 18

In process capability analysis,the standard deviation ($\sigma$)refers to the standard deviation of sample measures.

Accepted Answer

A) True 
 B)False

Question 19

The central tendency (mean)of the process is the only information needed to determine if the process is in a state of control.

Accepted Answer

A) True 
 B)False

Question 20

The ability of the process to meet,or exceed,its specifications can be determined by:

Accepted Answer

A) Pareto charts 
B) Cause-and-effect diagrams 
C) Histograms 
D) Cp index 
A) Pareto charts 
B) Cause-and-effect diagrams 
C) Histograms 
D) Cp index

Sampling inspection by attributes:

One of the earliest steps in designing a quality control system is to decide on:

A complete system of quality control:

Which of the following techniques are used for continuous improvement?

Which of the following statements is NOT true about six sigma quality?

Which of the following statements about process capability is accurate?

A process control chart:

The appearance of a restaurant meal that is not satisfactory is an example of:

Lean is another term for Six Sigma process improvement.

Using the information from question 8,what is the upper control limit for the range chart?

A Pareto chart:

Which of the following statements about process quality control is NOT true?

A machining process is capable of producing a component with an average specification of 5 inches and a process standard deviation of 0.1 inch.Suppose the customer accepts the component as long as it falls between 4.8 inches and 5.2 inches,then the process capability is:

Using the same data as in question 10,what is the lower control limit for a p-chart?

Surveys indicate that p charts are used more frequently than average (mean)and range charts are used.

In process capability analysis,the standard deviation ( $\sigma$ )refers to the standard deviation of sample measures.

The central tendency (mean)of the process is the only information needed to determine if the process is in a state of control.

The ability of the process to meet,or exceed,its specifications can be determined by:

The Operations Function

Operations and Supply Chain Strategy

Product Design

Process Selection

Service Delivery System Design

Process-Flow Analysis

Lean Thinking and Lean Systems

Managing Quality

Supply Chain Management

Forecasting

Capacity Planning

Scheduling Operations

Project Planning and Scheduling

Independent Demand Inventory

Materials Requirements Planning and ERP

Filters

Exam 9: Quality Control and Improvement

Sampling inspection by attributes:

One of the earliest steps in designing a quality control system is to decide on:

A complete system of quality control:

Which of the following techniques are used for continuous improvement?

Which of the following statements is NOT true about six sigma quality?

Which of the following statements about process capability is accurate?

A process control chart:

The appearance of a restaurant meal that is not satisfactory is an example of:

Lean is another term for Six Sigma process improvement.

Using the information from question 8,what is the upper control limit for the range chart?

A Pareto chart:

Which of the following statements about process quality control is NOT true?

A machining process is capable of producing a component with an average specification of 5 inches and a process standard deviation of 0.1 inch.Suppose the customer accepts the component as long as it falls between 4.8 inches and 5.2 inches,then the process capability is:

Using the same data as in question 10,what is the lower control limit for a p-chart?

Surveys indicate that p charts are used more frequently than average (mean)and range charts are used.

In process capability analysis,the standard deviation ( σ\sigmaσ )refers to the standard deviation of sample measures.

The central tendency (mean)of the process is the only information needed to determine if the process is in a state of control.

The ability of the process to meet,or exceed,its specifications can be determined by:

The Operations Function

Operations and Supply Chain Strategy

Product Design

Process Selection

Service Delivery System Design

Process-Flow Analysis

Lean Thinking and Lean Systems

Managing Quality

Supply Chain Management

Forecasting

Capacity Planning

Scheduling Operations

Project Planning and Scheduling

Independent Demand Inventory

Materials Requirements Planning and ERP

Filters

In process capability analysis,the standard deviation ( $\sigma$ )refers to the standard deviation of sample measures.