Question 1

A(n)_____ characterizes the presence or absence of nonconformances in a unit of work.

Accepted Answer

A) variable 
B) indicator 
C) attribute 
D) error 
A) variable 
B) indicator 
C) attribute 
D) error

Question 2

RM Industries wishes to monitor its end-of-week accounts receivable balance. To do so, the end-of-week balances for the previous 25 weeks were recorded and are shown below. Establish an x-chart and a moving range (using n = 2) chart for this process.

Accepted Answer

A moving range, with @#LAT-DLM&, is defined as the

Question 3

A process fills boxes with detergent.Construct an appropriate set of control limits to monitor the filling process.Historical data for fill weight (in ounces)of ten samples are presented below.A sample size of six was used.

Accepted Answer

The fill weight of the boxes i

Question 4

Because of high test costs,a sample of single wastewater sludge is tested daily for dissolved oxygen content.The appropriate control chart is:

Accepted Answer

A)  $ \bar{x} $-chart and R-chart. 
B) u-chart. 
C) x-chart and moving range chart. 
D) x-chart and R-chart. 
A)  $ \bar{x} $-chart and R-chart. 
B) u-chart. 
C) x-chart and moving range chart. 
D) x-chart and R-chart.

Question 5

Process capability indices can be computed from data in an $ \bar{x} $ -chart.

Accepted Answer

A) True 
 B)False

Question 6

For variables data,the sample means are assumed to be:

Accepted Answer

A) exponentially distributed. 
B) normally distributed. 
C) Poisson distributed. 
D) binomially distributed. 
A) exponentially distributed. 
B) normally distributed. 
C) Poisson distributed. 
D) binomially distributed.

Question 7

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

Accepted Answer

A) 0.083. 
B) 0.096. 
C) 0.137. 
D) 0.254. 
A) 0.083. 
B) 0.096. 
C) 0.137. 
D) 0.254.

Question 8

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 9

The frequency of sampling in pre-control is often determined by dividing the time period between two successive out-of-control signals by six.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is CORRECT regarding an x-chart?

Accepted Answer

A) Individual data require averaging before being plotted on it. 
B) It is less sensitive to many conditions that can be detected by $ \bar{x} $-chart and R-chart. 
C) Specification limits cannot be drawn on the chart for direct comparison with the control limits. 
D) The assumption of normality of observations is less critical than for $ \bar{x} $-chart and R-charts. 
A) Individual data require averaging before being plotted on it. 
B) It is less sensitive to many conditions that can be detected by $ \bar{x} $-chart and R-chart. 
C) Specification limits cannot be drawn on the chart for direct comparison with the control limits. 
D) The assumption of normality of observations is less critical than for $ \bar{x} $-chart and R-charts.

Question 11

A histogram of data that resembles the normal distribution indicates that the process is in control.

Accepted Answer

A) True 
 B)False

Question 12

In determining the method of sampling,samples should be chosen to be as heterogeneous as possible so that each sample reflects the system of common causes or assignable causes that may be present at that point in time.

Accepted Answer

A) True 
 B)False

Question 13

A canning company defines a "nonconformance" as an orange juice can whose diameter is beyond the upper specification limit.A manager at the canning company wants to monitor the number of such orange juice cans produced per day.Each day,an employee will randomly select 120 cans over a period of four weeks.The employee then determines and plots the number of nonconformance cans in each sample.The appropriate control chart is a(n):

Accepted Answer

A) u-chart. 
B) R-chart. 
C) p-chart. 
D) np-chart. 
A) u-chart. 
B) R-chart. 
C) p-chart. 
D) np-chart.

Question 14

The _____ is used to monitor the centering of the process.

Accepted Answer

A)  $ \bar{x} $ -chart 
B) R-chart 
C) p-chart 
D) np-chart 
A)  $ \bar{x} $ -chart 
B) R-chart 
C) p-chart 
D) np-chart

Question 15

Common and special causes of variation must be eliminated before process capability can be determined.

Accepted Answer

A) True 
 B)False

Question 16

For statistical process control,a good sampling method should always:

Accepted Answer

A) use samples of random measurements over a long period of time. 
B) minimize sampling cost. 
C) maximize sample size. 
D) use rational subgroups. 
A) use samples of random measurements over a long period of time. 
B) minimize sampling cost. 
C) maximize sample size. 
D) use rational subgroups.

Question 17

Histograms allow you to distinguish between common and special causes of variation.

Accepted Answer

A) True 
 B)False

Question 18

If all sample averages on an $ \bar{x} $ -chart fall within the control limits,all output will be conforming.

Accepted Answer

A) True 
 B)False

Question 19

An alternative to using the R-chart is the:

Accepted Answer

A) np-chart. 
B) s-chart. 
C) c-chart. 
D) p-chart. 
A) np-chart. 
B) s-chart. 
C) c-chart. 
D) p-chart.

Question 20

A machined part has a lower specification limit of 3.5 inches and an upper specification limit of 3.9 inches.The range for the pre-control green zone is:

Accepted Answer

A) 3.6 inches to 3.8 inches. 
B) 3.8 inches to 3.9 inches. 
C) less than 3.5 inches. 
D) 3.5 inches to 3.9 inches. 
A) 3.6 inches to 3.8 inches. 
B) 3.8 inches to 3.9 inches. 
C) less than 3.5 inches. 
D) 3.5 inches to 3.9 inches.

A(n)_____ characterizes the presence or absence of nonconformances in a unit of work.

RM Industries wishes to monitor its end-of-week accounts receivable balance. To do so, the end-of-week balances for the previous 25 weeks were recorded and are shown below. Establish an x-chart and a moving range (using n = 2) chart for this process.

A process fills boxes with detergent.Construct an appropriate set of control limits to monitor the filling process.Historical data for fill weight (in ounces)of ten samples are presented below.A sample size of six was used.

Because of high test costs,a sample of single wastewater sludge is tested daily for dissolved oxygen content.The appropriate control chart is:

Process capability indices can be computed from data in an $\bar{x}$ -chart.

For variables data,the sample means are assumed to be:

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

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:

The frequency of sampling in pre-control is often determined by dividing the time period between two successive out-of-control signals by six.

Which of the following is CORRECT regarding an x-chart?

A histogram of data that resembles the normal distribution indicates that the process is in control.

In determining the method of sampling,samples should be chosen to be as heterogeneous as possible so that each sample reflects the system of common causes or assignable causes that may be present at that point in time.

The _____ is used to monitor the centering of the process.

Common and special causes of variation must be eliminated before process capability can be determined.

For statistical process control,a good sampling method should always:

Histograms allow you to distinguish between common and special causes of variation.

If all sample averages on an $\bar{x}$ -chart fall within the control limits,all output will be conforming.

An alternative to using the R-chart is the:

A machined part has a lower specification limit of 3.5 inches and an upper specification limit of 3.9 inches.The range for the pre-control green zone is:

Introduction to Quality

Foundations of Quality Management

Customer Focus

Workforce Focus

Process Focus

Statistical Methods in Quality Management

Design for Quality and Product Excellence

Process Improvement and Six Sigma

The Baldrige Framework for Performance Excellence

Strategy and Performance Excellence

Measurement and Knowledge Management for Performance Excellence

Leadership for Performance Excellence

Building and Sustaining Quality and Performance Excellence

Filters

Exam 8: Measuring and Controlling Quality

A(n)_____ characterizes the presence or absence of nonconformances in a unit of work.

RM Industries wishes to monitor its end-of-week accounts receivable balance. To do so, the end-of-week balances for the previous 25 weeks were recorded and are shown below. Establish an x-chart and a moving range (using n = 2) chart for this process.

A process fills boxes with detergent.Construct an appropriate set of control limits to monitor the filling process.Historical data for fill weight (in ounces)of ten samples are presented below.A sample size of six was used.

Because of high test costs,a sample of single wastewater sludge is tested daily for dissolved oxygen content.The appropriate control chart is:

Process capability indices can be computed from data in an xˉ \bar{x} xˉ -chart.

For variables data,the sample means are assumed to be:

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

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:

The frequency of sampling in pre-control is often determined by dividing the time period between two successive out-of-control signals by six.

Which of the following is CORRECT regarding an x-chart?

A histogram of data that resembles the normal distribution indicates that the process is in control.

In determining the method of sampling,samples should be chosen to be as heterogeneous as possible so that each sample reflects the system of common causes or assignable causes that may be present at that point in time.

The _____ is used to monitor the centering of the process.

Common and special causes of variation must be eliminated before process capability can be determined.

For statistical process control,a good sampling method should always:

Histograms allow you to distinguish between common and special causes of variation.

If all sample averages on an xˉ \bar{x} xˉ -chart fall within the control limits,all output will be conforming.

An alternative to using the R-chart is the:

A machined part has a lower specification limit of 3.5 inches and an upper specification limit of 3.9 inches.The range for the pre-control green zone is:

Introduction to Quality

Foundations of Quality Management

Customer Focus

Workforce Focus

Process Focus

Statistical Methods in Quality Management

Design for Quality and Product Excellence

Process Improvement and Six Sigma

The Baldrige Framework for Performance Excellence

Strategy and Performance Excellence

Measurement and Knowledge Management for Performance Excellence

Leadership for Performance Excellence

Building and Sustaining Quality and Performance Excellence

Filters

Process capability indices can be computed from data in an $\bar{x}$ -chart.

If all sample averages on an $\bar{x}$ -chart fall within the control limits,all output will be conforming.