Question 1

Genichi Taguchi's view of the cost of quality is that variance is a discontinuous function.

Accepted Answer

A) True 
 B)False

Question 2

LTPD in acceptance sampling stands for "lots of tolerance for parts defective".

Accepted Answer

A) True 
 B)False

Question 3

Attributes are those quality characteristics that are classified as either conforming or not conforming to specifications.

Accepted Answer

A) True 
 B)False

Question 4

AQL stands for accepting questionable lots in production quality management.

Accepted Answer

A) True 
 B)False

Question 5

An example of assignable variation in a production system may be that a machine is not adjusted properly.

Accepted Answer

A) True 
 B)False

Question 6

In monitoring process quality we might use which of the following statistics?

Accepted Answer

A) Absolute values 
B) Percentage deviation from tolerance centers 
C) "k" values for the sample mean 
D) Logarithmic control intervals 
E) Difference between the highest and lowest value in a sample 
A) Absolute values 
B) Percentage deviation from tolerance centers 
C) "k" values for the sample mean 
D) Logarithmic control intervals 
E) Difference between the highest and lowest value in a sample

Question 7

You are developing an "X-bar" chart based on sample means.You know the standard deviation of the sample means is 4,the desired confidence level is 99.7 percent and the average of the sample means is 24.Which of the following is your UCL?

Accepted Answer

A) 36 
B) 24 
C) 12 
D) 4 
E) None of the above 
A) 36 
B) 24 
C) 12 
D) 4 
E) None of the above

Question 8

One-hundred percent inspection is justified when the cost of inspection is low.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following should we use an "R" chart to monitor process quality?

Accepted Answer

A) Grades in a freshman "pass/fail" course 
B) Tire pressures in an auto assembly plant 
C) Vehicles passing emissions inspection 
D) Computer software errors 
E) Number of units with missing operations 
A) Grades in a freshman "pass/fail" course 
B) Tire pressures in an auto assembly plant 
C) Vehicles passing emissions inspection 
D) Computer software errors 
E) Number of units with missing operations

Question 10

If the fraction defective is 0.4 based on a sample size of 100,what is the standard deviation used in constructing the "p" chart?

Accepted Answer

The answer of If the fraction defective is 0.4 based...

Question 11

What does it mean when we say that a process is capable?

Accepted Answer

From the text on page 332,a process is c

Question 12

Measurement by attributes means taking a sample,measuring the attribute in question and determining the level of quality in the population from which the sample was drawn.

Accepted Answer

A) True 
 B)False

Question 13

Processes produce goods and services that have some measurable variation in attributes.What is the quality philosophy that companies which insist on design tolerances set six standard deviations of attribute variation away from the mean are operating under?

Accepted Answer

The answer of Processes produce goods and services that have...

Question 14

The capability index (Cpk)calculates the percentage of items being produced within specifications.

Accepted Answer

A) True 
 B)False

Question 15

To obtain a 99.7 percent confidence level in a "p" chart we would use a value of 3 for "z".

Accepted Answer

A) True 
 B)False

Question 16

If you are going to develop an "R" chart based on range statistics and you are using a sample size of 15 for your charting purposes.Which of the following is the upper control limit D4 factor for the chart?

Accepted Answer

A) 1.65 
B) 1.70 
C) 1.76 
D) 1.87 
E) 1.92 
A) 1.65 
B) 1.70 
C) 1.76 
D) 1.87 
E) 1.92

Question 17

What is the difference between statistical process control (SPC)and statistical quality control (SQC)?

Accepted Answer

Statistical process control (SPC)is conc

Question 18

You have just used the capability index (Cpk)formulas to compute the two values "min [2,2.5]".Which of the following is the proper interpretation of these numbers?

Accepted Answer

A) The true capability index value is 2.5 
B) The mean of the production process has shifted to the left of the design limits 
C) The mean of the production process has shifted to the right of the design limits 
D) The mean has not shifted at all 
E) The true capability index value is between 2 and 2.5 
A) The true capability index value is 2.5 
B) The mean of the production process has shifted to the left of the design limits 
C) The mean of the production process has shifted to the right of the design limits 
D) The mean has not shifted at all 
E) The true capability index value is between 2 and 2.5

Question 19

Variation in production systems that is caused by factors that can be clearly identified and possibly even managed is called assignable variation.

Accepted Answer

A) True 
 B)False

Question 20

In acceptance sampling,the value for the acceptance number (c)is determined by the interaction of the acceptable quality level (AQL),the lot tolerance percent defective (LTPD),the probability of rejecting a high quality lot (alpha)and the probability of accepting a low quality lot (beta).

Accepted Answer

A) True 
 B)False

Exam 25: Process Capability and Spc

Genichi Taguchi's view of the cost of quality is that variance is a discontinuous function.

LTPD in acceptance sampling stands for "lots of tolerance for parts defective".

Attributes are those quality characteristics that are classified as either conforming or not conforming to specifications.

AQL stands for accepting questionable lots in production quality management.

An example of assignable variation in a production system may be that a machine is not adjusted properly.

In monitoring process quality we might use which of the following statistics?

You are developing an "X-bar" chart based on sample means.You know the standard deviation of the sample means is 4,the desired confidence level is 99.7 percent and the average of the sample means is 24.Which of the following is your UCL?

One-hundred percent inspection is justified when the cost of inspection is low.

Which of the following should we use an "R" chart to monitor process quality?

If the fraction defective is 0.4 based on a sample size of 100,what is the standard deviation used in constructing the "p" chart?

What does it mean when we say that a process is capable?

Measurement by attributes means taking a sample,measuring the attribute in question and determining the level of quality in the population from which the sample was drawn.

Processes produce goods and services that have some measurable variation in attributes.What is the quality philosophy that companies which insist on design tolerances set six standard deviations of attribute variation away from the mean are operating under?

The capability index (Cpk)calculates the percentage of items being produced within specifications.

To obtain a 99.7 percent confidence level in a "p" chart we would use a value of 3 for "z".

If you are going to develop an "R" chart based on range statistics and you are using a sample size of 15 for your charting purposes.Which of the following is the upper control limit D4 factor for the chart?

What is the difference between statistical process control (SPC)and statistical quality control (SQC)?

You have just used the capability index (Cpk)formulas to compute the two values "min [2,2.5]".Which of the following is the proper interpretation of these numbers?

Variation in production systems that is caused by factors that can be clearly identified and possibly even managed is called assignable variation.

In acceptance sampling,the value for the acceptance number (c)is determined by the interaction of the acceptable quality level (AQL),the lot tolerance percent defective (LTPD),the probability of rejecting a high quality lot (alpha)and the probability of accepting a low quality lot (beta).

Introduction to the Field

Operations and Supply Strategy

Project Management

Product and Service Design

Strategic Capacity Management

Process Analysis

Manufacturing Processes

Service Processes

Six Sigma Quality

Supply-Chain Strategy

Logistics and Facility Location

Lean Manufacturing

Operations Consulting Reengineering

Enterprise Resource Planning Systems

Demand Management and Forecasting

Aggregate Sales and Operations Planning

Inventory Control

Material Requirements Planning

Scheduling

Constraint Management

Linear Programming Using the Excel Solver

Learning Curves

Job Design Work Measurement

Waiting Line Analysis

Simulation

Filters

The capability index (C_pk)calculates the percentage of items being produced within specifications.

You have just used the capability index (C_pk)formulas to compute the two values "min [2,2.5]".Which of the following is the proper interpretation of these numbers?