Question 1

Common causes of variation are also known as __________________________.

Accepted Answer

A) frequent 
B) usual 
C) inexpensive 
D) ordinary 
E) random 
A) frequent 
B) usual 
C) inexpensive 
D) ordinary 
E) random

Question 2

P-charts are used to measure:

Accepted Answer

A) continuous variation 
B) intermittent random variation 
C) proportion of items in a sample that is defective 
D) the count of defective parts 
E) proportion of items in a sample that are good 
A) continuous variation 
B) intermittent random variation 
C) proportion of items in a sample that is defective 
D) the count of defective parts 
E) proportion of items in a sample that are good

Question 3

What is the first step that should be taken if an observation falls below the lower control limit on a control chart?

Accepted Answer

A) Recalibrate the machine 
B) Perform a new process capability study 
C) Try a larger standard deviation value 
D) Search for assignable causes 
E) Nothing-a low value is a "good" thing 
A) Recalibrate the machine 
B) Perform a new process capability study 
C) Try a larger standard deviation value 
D) Search for assignable causes 
E) Nothing-a low value is a "good" thing

Question 4

What is a graph that shows the probability or chance of accepting a lot given various proportions of defects in the lot?

Accepted Answer

A) S curve 
B) Z-chart 
C) OC curve 
D) p-chart 
E) R-chart 
A) S curve 
B) Z-chart 
C) OC curve 
D) p-chart 
E) R-chart

Question 5

Suppose that you want to measure the percentage of candles that are cut longer than 9 inches.Which control chart would be appropriate?

Accepted Answer

A) x-bar chart 
B) R-chart 
C) p-chart 
D) c-chart 
E) OC chart 
A) x-bar chart 
B) R-chart 
C) p-chart 
D) c-chart 
E) OC chart

Question 6

What are the two aspects to implementing the six-sigma concept?

Accepted Answer

A) numerically controlled machines and inventory management 
B) numerically controlled machines and people involvement 
C) numerically controlled machines and technical tools 
D) technical tools and people involvement 
E) inventory management and technical tools 
A) numerically controlled machines and inventory management 
B) numerically controlled machines and people involvement 
C) numerically controlled machines and technical tools 
D) technical tools and people involvement 
E) inventory management and technical tools

Question 7

What are preset ranges of acceptable quality characteristics?

Accepted Answer

A) Control limits. 
B) Product specifications. 
C) Six-sigma limits. 
D) AQC limits. 
E) R-chart limits. 
A) Control limits. 
B) Product specifications. 
C) Six-sigma limits. 
D) AQC limits. 
E) R-chart limits.

Question 8

What is a control chart that monitors changes in the dispersion or variability of a process?

Accepted Answer

A) x-bar chart 
B) R-chart 
C) p-chart 
D) c-chart 
E) OC chart 
A) x-bar chart 
B) R-chart 
C) p-chart 
D) c-chart 
E) OC chart

Question 9

What is the formula for an x-bar chart's center line?

Accepted Answer

The answer of What is the formula for an x-bar...

Question 10

For which of the following would a control chart for attributes not be appropriate?

Accepted Answer

A) Number of nonfunctioning light bulbs 
B) Proportion of broken eggs in a carton 
C) Number of rotten apples 
D) Number of complaints issued 
E) Length of metal rods 
A) Number of nonfunctioning light bulbs 
B) Proportion of broken eggs in a carton 
C) Number of rotten apples 
D) Number of complaints issued 
E) Length of metal rods

Question 11

What program at Intel enforces the policy to make chips in the same way at all facilities?

Accepted Answer

A) "make-same" 
B) "copy-exactly" 
C) "duplicate-same" 
D) "duplicate-exactly" 
E) "one-size-fits-all" 
A) "make-same" 
B) "copy-exactly" 
C) "duplicate-same" 
D) "duplicate-exactly" 
E) "one-size-fits-all"

Question 12

Suppose that you have calculated the control limits for a p-chart to be the following: LCL = 0.02 and UCL = 0.08.
Today,you took 10 samples of 20 units each.The first nine samples each had one defect.The last sample had zero defects.What can you conclude?

Accepted Answer

A) the process is out of control 
B) the process is in a state of control 
C) the last sample should be ignored because it was "too good" 
D) you calculated the limits incorrectly because the LCL must be either negative or 0 
E) the sample size must be increased 
A) the process is out of control 
B) the process is in a state of control 
C) the last sample should be ignored because it was "too good" 
D) you calculated the limits incorrectly because the LCL must be either negative or 0 
E) the sample size must be increased

Question 13

Statistical quality control is a subset of statistical process control.

Accepted Answer

A) True 
 B)False

Question 14

What is the formula for the sample standard deviation?

Accepted Answer

The answer of What is the formula for the sample...

Question 15

The center line of a control chart represents what?

Accepted Answer

A) Range 
B) Standard deviation 
C) Mean 
D) Mean divided by standard deviation 
E) Skewness 
A) Range 
B) Standard deviation 
C) Mean 
D) Mean divided by standard deviation 
E) Skewness

Question 16

What is the formula for the process capability index Cp?

Accepted Answer

A) process width / specification width 
B) specification width $\times$ process width 
C) specification width / Type I error 
D) specification width / process width 
E) specification width / 99.74% 
A) process width / specification width 
B) specification width $\times$ process width 
C) specification width / Type I error 
D) specification width / process width 
E) specification width / 99.74%

Question 17

What does "OC" stand for?

Accepted Answer

Operating

Question 18

What is the probability of a Type I error for a control chart with limits set at $\pm$ 3 standard deviations from the mean?

Accepted Answer

A) 0.00% 
B) 0.26% 
C) 4.56% 
D) 20.00% 
E) 50.00% 
A) 0.00% 
B) 0.26% 
C) 4.56% 
D) 20.00% 
E) 50.00%

Question 19

Six sigma programs strive to set control limits at ________________________.

Accepted Answer

the center

Question 20

What is the relationship between Cp and Cpk?

Accepted Answer

A) Cp $\ge$ 2 Cpk 
B) Cp $\le$ Cpk 
C) Cp $\ge$ Cpk 
D) Cp $\le$ 2Cpk 
E) Cp $\div$  Cpk $\ge$ 3$\sigma$ 
A) Cp $\ge$ 2 Cpk 
B) Cp $\le$ Cpk 
C) Cp $\ge$ Cpk 
D) Cp $\le$ 2Cpk 
E) Cp $\div$  Cpk $\ge$ 3$\sigma$

Common causes of variation are also known as __________________________.

P-charts are used to measure:

What is the first step that should be taken if an observation falls below the lower control limit on a control chart?

What is a graph that shows the probability or chance of accepting a lot given various proportions of defects in the lot?

Suppose that you want to measure the percentage of candles that are cut longer than 9 inches.Which control chart would be appropriate?

What are the two aspects to implementing the six-sigma concept?

What are preset ranges of acceptable quality characteristics?

What is a control chart that monitors changes in the dispersion or variability of a process?

What is the formula for an x-bar chart's center line?

For which of the following would a control chart for attributes not be appropriate?

What program at Intel enforces the policy to make chips in the same way at all facilities?

Suppose that you have calculated the control limits for a p-chart to be the following: LCL = 0.02 and UCL = 0.08. Today,you took 10 samples of 20 units each.The first nine samples each had one defect.The last sample had zero defects.What can you conclude?

Statistical quality control is a subset of statistical process control.

What is the formula for the sample standard deviation?

The center line of a control chart represents what?

What is the formula for the process capability index C_p?

What does "OC" stand for?

What is the probability of a Type I error for a control chart with limits set at $\pm$ 3 standard deviations from the mean?

Six sigma programs strive to set control limits at ________________________.

What is the relationship between C_pand C_pk?

Introduction to Operations

Operations Strategy and Competitiveness

Product Design and Process Selection

E-Commerce and Supply Chain Management

Total Quality Management

Just-In-Time and Lean Systems

Forecasting

Capacity Planning and Facility Location

Facility Layout

Work System Design

Independent Demand Inventory Management

Aggregate Planning

Resource Planning

Scheduling

Project Management

Spreadsheet Modeling: an Introduction

Introduction to Optimization

Waiting Line Models

Master Scheduling and Rough-Cut Capacity Planning

Filters

Exam 6: Statistical Quality Control

Common causes of variation are also known as __________________________.

P-charts are used to measure:

What is the first step that should be taken if an observation falls below the lower control limit on a control chart?

What is a graph that shows the probability or chance of accepting a lot given various proportions of defects in the lot?

Suppose that you want to measure the percentage of candles that are cut longer than 9 inches.Which control chart would be appropriate?

What are the two aspects to implementing the six-sigma concept?

What are preset ranges of acceptable quality characteristics?

What is a control chart that monitors changes in the dispersion or variability of a process?

What is the formula for an x-bar chart's center line?

For which of the following would a control chart for attributes not be appropriate?

What program at Intel enforces the policy to make chips in the same way at all facilities?

Suppose that you have calculated the control limits for a p-chart to be the following: LCL = 0.02 and UCL = 0.08. Today,you took 10 samples of 20 units each.The first nine samples each had one defect.The last sample had zero defects.What can you conclude?

Statistical quality control is a subset of statistical process control.

What is the formula for the sample standard deviation?

The center line of a control chart represents what?

What is the formula for the process capability index Cp?

What does "OC" stand for?

What is the probability of a Type I error for a control chart with limits set at ±\pm± 3 standard deviations from the mean?

Six sigma programs strive to set control limits at ________________________.

What is the relationship between Cp and Cpk?

Introduction to Operations

Operations Strategy and Competitiveness

Product Design and Process Selection

E-Commerce and Supply Chain Management

Total Quality Management

Just-In-Time and Lean Systems

Forecasting

Capacity Planning and Facility Location

Facility Layout

Work System Design

Independent Demand Inventory Management

Aggregate Planning

Resource Planning

Scheduling

Project Management

Spreadsheet Modeling: an Introduction

Introduction to Optimization

Waiting Line Models

Master Scheduling and Rough-Cut Capacity Planning

Filters

What is the formula for the process capability index C_p?

What is the probability of a Type I error for a control chart with limits set at $\pm$ 3 standard deviations from the mean?

What is the relationship between C_pand C_pk?