Question 1

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

Accepted Answer

A) True 
 B)False  False

Question 2

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

Question 3

"A production process delivers large amount of scrap products.Top management has discovered that improper machine maintenance is the reason behind this failure."
The above statement is an example of a special cause of variation.

Accepted Answer

A) True 
 B)False  True

Question 4

The Chair of the Quality Department at Motorola University wants to construct a p-chart for determining whether the four faculty members teaching the course are under control concerning the number of students who fail in the course.Accordingly,the Chair sampled 500 final grades from last year for each instructor,and computed the number of failures per instructor as 13,11,0,and 16 respectively.Compute the upper and lower standard control limits for this chart (rounded to 4 decimals).

Accepted Answer

A) 0.9500 and 0.0500 
B) 0.0600 and 0.1400 
C) 0.0388 and 0.0012 
D) 0.1400 and 0.0000 
E) None of the above 
A) 0.9500 and 0.0500 
B) 0.0600 and 0.1400 
C) 0.0388 and 0.0012 
D) 0.1400 and 0.0000 
E) None of the above

Question 5

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 6

The second step 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) The critical points in each of the processes where inspection is needed 
E) Whether to certify suppliers 
A) The amount of inspection to use 
B) Who should do the inspection 
C) The type of measurement to be used 
D) The critical points in each of the processes where inspection is needed 
E) Whether to certify suppliers

Question 7

Six sigma efforts are aimed at eliminating waste.

Accepted Answer

A) True 
 B)False

Question 8

The quality tool that shows the relationship between two variables is a histogram.

Accepted Answer

A) True 
 B)False

Question 9

In process capability analysis,the standard deviation ($\sigma$)refers to the standard deviation of the samples taken from the control chart.

Accepted Answer

A) True 
 B)False

Question 10

If failure costs were very high,a company would still use inspection.

Accepted Answer

A) True 
 B)False

Question 11

The Cp measure requires the process to be centered for an accurate measure of process capability.

Accepted Answer

A) True 
 B)False

Question 12

A process control chart:

Accepted Answer

A) Assumes that 99.74% of random variations observed will fall within an upper and lower limit 
B) Represents 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 
E) Both a and c 
A) Assumes that 99.74% of random variations observed will fall within an upper and lower limit 
B) Represents 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 
E) Both a and c

Question 13

The seven tools of quality control are equally applicable to both manufacturing and service industries.

Accepted Answer

A) True 
 B)False

Question 14

List and explain the five steps of the DMAIC process.

Accepted Answer

(1)Define: The process is selected for i

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 
E) 4.0 
A) 1.333 
B) 1.5 
C) 0.667 
D) 1.0 
E) 4.0

Question 16

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 and c 
E) 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 and c 
E) a,b,and c

Question 17

Which of the following is/are assumptions of process control?

Accepted Answer

A) Random variability cannot be eliminated unless the process is redesigned. 
B) Common causes represent random variability. 
C) Production processes are not usually found in a state of control. 
D) Only a and c 
E) a,b,and c 
A) Random variability cannot be eliminated unless the process is redesigned. 
B) Common causes represent random variability. 
C) Production processes are not usually found in a state of control. 
D) Only a and c 
E) a,b,and c

Question 18

The appearance of a TV cabinet 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 19

Which of the following quality control sample statistics indicates a quality characteristic that is an attribute?

Accepted Answer

A) Mean 
B) Proportion 
C) Variance 
D) Standard deviation 
E) Range 
A) Mean 
B) Proportion 
C) Variance 
D) Standard deviation 
E) Range

Question 20

There are two indicators of a process shift-points outside the control limits and an upward or downward trend in the process average.

Accepted Answer

A) True 
 B)False

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

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

"A production process delivers large amount of scrap products.Top management has discovered that improper machine maintenance is the reason behind this failure." The above statement is an example of a special cause of variation.

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

The second step in designing a quality control system is to decide on:

Six sigma efforts are aimed at eliminating waste.

The quality tool that shows the relationship between two variables is a histogram.

In process capability analysis,the standard deviation ( $\sigma$ )refers to the standard deviation of the samples taken from the control chart.

If failure costs were very high,a company would still use inspection.

The C_p measure requires the process to be centered for an accurate measure of process capability.

A process control chart:

The seven tools of quality control are equally applicable to both manufacturing and service industries.

List and explain the five steps of the DMAIC process.

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:

Sampling inspection by attributes:

Which of the following is/are assumptions of process control?

The appearance of a TV cabinet that is not satisfactory is an example of:

Which of the following quality control sample statistics indicates a quality characteristic that is an attribute?

There are two indicators of a process shift-points outside the control limits and an upward or downward trend in the process average.

The Operations Function

Operations and Supply Chain Strategy

Product Design

Process Selection

Service Process 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

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

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

"A production process delivers large amount of scrap products.Top management has discovered that improper machine maintenance is the reason behind this failure." The above statement is an example of a special cause of variation.

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

The second step in designing a quality control system is to decide on:

Six sigma efforts are aimed at eliminating waste.

The quality tool that shows the relationship between two variables is a histogram.

In process capability analysis,the standard deviation ( σ\sigmaσ )refers to the standard deviation of the samples taken from the control chart.

If failure costs were very high,a company would still use inspection.

The Cp measure requires the process to be centered for an accurate measure of process capability.

A process control chart:

The seven tools of quality control are equally applicable to both manufacturing and service industries.

List and explain the five steps of the DMAIC process.

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:

Sampling inspection by attributes:

Which of the following is/are assumptions of process control?

The appearance of a TV cabinet that is not satisfactory is an example of:

Which of the following quality control sample statistics indicates a quality characteristic that is an attribute?

There are two indicators of a process shift-points outside the control limits and an upward or downward trend in the process average.

The Operations Function

Operations and Supply Chain Strategy

Product Design

Process Selection

Service Process 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 the samples taken from the control chart.

The C_p measure requires the process to be centered for an accurate measure of process capability.