Question 1

An   -chart is used to monitor the process:

Accepted Answer

A) range. 
B) median. 
C) variance. 
D) mean. 
A) range. 
B) median. 
C) variance. 
D) mean.

Question 2

Twenty samples of size 6 were collected for a variable measurement.Determine the upper control limit (UCL)and lower control limit (LCL)for an R-chart if the sum of the sample ranges equals 88.0.

Accepted Answer

A) UCL = 8.8176, LCL = 0.0000 
B) UCL = 9.3016, LCL = 0.3344 
C) UCL = 13.2000, LCL = 0.0000 
D) UCL = 29.3921, LCL = 0.0000 
A) UCL = 8.8176, LCL = 0.0000 
B) UCL = 9.3016, LCL = 0.3344 
C) UCL = 13.2000, LCL = 0.0000 
D) UCL = 29.3921, LCL = 0.0000

Question 3

The control chart most appropriate for plotting the daily percentage of students that wait longer than 5 minutes in line at the undergraduate admissions office is a(n):

Accepted Answer

A) p-chart. 
B) np-chart. 
C) x-chart. 
D)    -chart. 
A) p-chart. 
B) np-chart. 
C) x-chart. 
D)    -chart.

Question 4

Statistical process control relies on _____.

Accepted Answer

A) capability models 
B) variance analyses 
C) control charts 
D) conformance reports 
A) capability models 
B) variance analyses 
C) control charts 
D) conformance reports

Question 5

To form rational sub-groups for an   -chart,the goal is to have the samples be as _____ as possible.

Accepted Answer

A) heterogeneous 
B) homogeneous 
C) large 
D) equally spaced 
A) heterogeneous 
B) homogeneous 
C) large 
D) equally spaced

Question 6

In pre-control,which zone covers the nominal dimension?

Accepted Answer

A) Gray zone 
B) Yellow zone 
C) Red zone 
D) Green zone 
A) Gray zone 
B) Yellow zone 
C) Red zone 
D) Green zone

Question 7

Which of the following is NOT one of the basic applications of a control chart?

Accepted Answer

A) To calculate the average-range. 
B) To establish a state of statistical control. 
C) To monitor a process and signal when the process goes out of control. 
D) To determine process capability. 
A) To calculate the average-range. 
B) To establish a state of statistical control. 
C) To monitor a process and signal when the process goes out of control. 
D) To determine process capability.

Question 8

In determining whether a process is in statistical control,the _____ is/are generally analyzed first.

Accepted Answer

A) R-chart 
B) control limits 
C) average range 
D) nonconformance 
A) R-chart 
B) control limits 
C) average range 
D) nonconformance

Question 9

Fifteen samples,of size 100 were collected and a total of 96 nonconforming items were found.The 3-sigma upper control limit for a p-chart would be:

Accepted Answer

A) 0.066. 
B) 0.083. 
C) 0.137. 
D) 0.254. 
A) 0.066. 
B) 0.083. 
C) 0.137. 
D) 0.254.

Question 10

Explain the difference between Type I and Type II errors in the context of a control chart.

Accepted Answer

A Type I error concerns taking action wh

Question 11

Five samples of size 3 were collected for a variable measurement.All sample data were greater than or equal to 4.0.The sample means and sample ranges are provided in the following table.
 
The values of which sample are identical?

Accepted Answer

A) sample 1 
B) sample 2 
C) sample 3 
D) sample 4 
A) sample 1 
B) sample 2 
C) sample 3 
D) sample 4

Question 12

Discuss the differences in sample size and sampling frequency for attributes and variables data.

Accepted Answer

Response should focus on the notion that

Question 13

Short repeated patterns in a control chart,with alternating high peaks and low valleys,are known as:

Accepted Answer

A) trends. 
B) cycles. 
C) spikes. 
D) reciprocals. 
A) trends. 
B) cycles. 
C) spikes. 
D) reciprocals.

Question 14

The output of a process is stable and normally distributed.If the process mean equals 23.5,the percentage of output expected to be less than or equal to the mean:

Accepted Answer

A) is less than 25% . 
B) is 50%. 
C) is greater than 75%. 
D) cannot be determined without knowing the standard deviation value. 
A) is less than 25% . 
B) is 50%. 
C) is greater than 75%. 
D) cannot be determined without knowing the standard deviation value.

Question 15

A "hugging the centerline limit" pattern in a control chart can be the result of using two different lots of material in one process.

Accepted Answer

A) True 
 B)False

Question 16

Define pre-control and explain pre-control benefits organization.Explain under what conditions pre-control can be used.

Accepted Answer

Pre-control represents monitoring the pr

Question 17

If the traditional 3-sigma limits on a control chart are replaced by 2-sigma limits,which of the following is TRUE?

Accepted Answer

A) Type I errors decrease. 
B) Type I errors increase. 
C) Type II errors increase. 
D) The center line moves downward. 
A) Type I errors decrease. 
B) Type I errors increase. 
C) Type II errors increase. 
D) The center line moves downward.

Question 18

Attribute control charts require larger sample sizes than variable control charts.

Accepted Answer

A) True 
 B)False

Question 19

A _____ monitors the fraction of nonconforming items.

Accepted Answer

A) p-chart 
B) x-chart 
C) s-chart 
D) c-chart 
A) p-chart 
B) x-chart 
C) s-chart 
D) c-chart

Question 20

A(n)_____ is the result of some cause that gradually affects the quality characteristics of the product and causes the points on a control chart to gradually move up or down from the center line.

Accepted Answer

A) instability 
B) process shift 
C) cycle 
D) trend 
A) instability 
B) process shift 
C) cycle 
D) trend

An -chart is used to monitor the process:

Twenty samples of size 6 were collected for a variable measurement.Determine the upper control limit (UCL)and lower control limit (LCL)for an R-chart if the sum of the sample ranges equals 88.0.

The control chart most appropriate for plotting the daily percentage of students that wait longer than 5 minutes in line at the undergraduate admissions office is a(n):

Statistical process control relies on _____.

To form rational sub-groups for an -chart,the goal is to have the samples be as _____ as possible.

In pre-control,which zone covers the nominal dimension?

Which of the following is NOT one of the basic applications of a control chart?

In determining whether a process is in statistical control,the _____ is/are generally analyzed first.

Fifteen samples,of size 100 were collected and a total of 96 nonconforming items were found.The 3-sigma upper control limit for a p-chart would be:

Explain the difference between Type I and Type II errors in the context of a control chart.

Five samples of size 3 were collected for a variable measurement.All sample data were greater than or equal to 4.0.The sample means and sample ranges are provided in the following table. The values of which sample are identical?

Discuss the differences in sample size and sampling frequency for attributes and variables data.

Short repeated patterns in a control chart,with alternating high peaks and low valleys,are known as:

The output of a process is stable and normally distributed.If the process mean equals 23.5,the percentage of output expected to be less than or equal to the mean:

A "hugging the centerline limit" pattern in a control chart can be the result of using two different lots of material in one process.

Define pre-control and explain pre-control benefits organization.Explain under what conditions pre-control can be used.

If the traditional 3-sigma limits on a control chart are replaced by 2-sigma limits,which of the following is TRUE?

Attribute control charts require larger sample sizes than variable control charts.

A _____ monitors the fraction of nonconforming items.

A(n)_____ is the result of some cause that gradually affects the quality characteristics of the product and causes the points on a control chart to gradually move up or down from the center line.

Introduction

Total Quality In Organizations

Philosophies And Frameworks

Strategic Focus For Performance Excellence

Focusing On Customers

High Performance Workforce Management

Process Management

Performance Measurement And Information Management

Leading, building, and Sustaining Performance Excellence

Statistical Thinking And Applications

Six Sigma And Process Improvement

Design For Quality And Product Excellence

Filters

Exam 13: Statistical Process Control

An -chart is used to monitor the process:

Twenty samples of size 6 were collected for a variable measurement.Determine the upper control limit (UCL)and lower control limit (LCL)for an R-chart if the sum of the sample ranges equals 88.0.

The control chart most appropriate for plotting the daily percentage of students that wait longer than 5 minutes in line at the undergraduate admissions office is a(n):

Statistical process control relies on _____.

To form rational sub-groups for an -chart,the goal is to have the samples be as _____ as possible.

In pre-control,which zone covers the nominal dimension?

Which of the following is NOT one of the basic applications of a control chart?

In determining whether a process is in statistical control,the _____ is/are generally analyzed first.

Fifteen samples,of size 100 were collected and a total of 96 nonconforming items were found.The 3-sigma upper control limit for a p-chart would be:

Explain the difference between Type I and Type II errors in the context of a control chart.

Five samples of size 3 were collected for a variable measurement.All sample data were greater than or equal to 4.0.The sample means and sample ranges are provided in the following table. The values of which sample are identical?

Discuss the differences in sample size and sampling frequency for attributes and variables data.

Short repeated patterns in a control chart,with alternating high peaks and low valleys,are known as:

The output of a process is stable and normally distributed.If the process mean equals 23.5,the percentage of output expected to be less than or equal to the mean:

A "hugging the centerline limit" pattern in a control chart can be the result of using two different lots of material in one process.

Define pre-control and explain pre-control benefits organization.Explain under what conditions pre-control can be used.

If the traditional 3-sigma limits on a control chart are replaced by 2-sigma limits,which of the following is TRUE?

Attribute control charts require larger sample sizes than variable control charts.

A _____ monitors the fraction of nonconforming items.

A(n)_____ is the result of some cause that gradually affects the quality characteristics of the product and causes the points on a control chart to gradually move up or down from the center line.

Introduction

Total Quality In Organizations

Philosophies And Frameworks

Strategic Focus For Performance Excellence

Focusing On Customers

High Performance Workforce Management

Process Management

Performance Measurement And Information Management

Leading, building, and Sustaining Performance Excellence

Statistical Thinking And Applications

Six Sigma And Process Improvement

Design For Quality And Product Excellence

Filters