Question 1

If a process is stable and in statistical control,it is not influenced by assignable causes of variation.

Accepted Answer

A) True 
 B)False

Question 2

A control chart on which subgroup ranges are plotted versus time is a(n)_____ chart.

Accepted Answer

A)   
B)  R 
C)  p 
D)  C 
A)   
B)  R 
C)  p 
D)  C

Question 3

For a given control chart,zone boundaries consist of the UCL and LCL.

Accepted Answer

A) True 
 B)False

Question 4

If   = 2.0144, 
 = .0972,and there are 25 subgroups of size 5,find the UCL and the LCL for the Chart.

Accepted Answer

A)  [1.999,2.029] 
B)  [1.958,2.071] 
C)  [1.917,2.112] 
D)  [1.437,2.591] 
A)  [1.999,2.029] 
B)  [1.958,2.071] 
C)  [1.917,2.112] 
D)  [1.437,2.591]

Question 5

Use this information about 10 shipments of lightbulbs.Shipment  
If 400 bulbs are selected at random from each of 10 shipments and the number of defectives in each shipment is given above,find the appropriate center line.

Accepted Answer

A)  .005 
B)  .05 
C)  .0025 
D)  .01 
A)  .005 
B)  .05 
C)  .0025 
D)  .01

Question 6

Common causes of variation represent the inherent variability of a given process.

Accepted Answer

A) True 
 B)False

Question 7

How well a process is able to meet the requirements set forth by the process design is called the quality of design.

Accepted Answer

A) True 
 B)False

Question 8

___________ causes of variation may be remedied by local supervision.

Accepted Answer

A)  Common 
B)  Assignable 
C)  Usual 
D)  Expected 
A)  Common 
B)  Assignable 
C)  Usual 
D)  Expected

Question 9

Assume that 25 samples of 50 each are taken and the total number of defectives is 34.Calculate .

Accepted Answer

A)  .680 
B)  .453 
C)  .816 
D)  .0272 
A)  .680 
B)  .453 
C)  .816 
D)  .0272

Question 10

If  = 16.1, 
 = .03,and n = 6,calculate the natural tolerance limits.

Accepted Answer

A)  [16.065,16.135] 
B)  [16.088,16.112] 
C)  [15.745,16.455] 
D)  [16.055,16.145] 
A)  [16.065,16.135] 
B)  [16.088,16.112] 
C)  [15.745,16.455] 
D)  [16.055,16.145]

Question 11

If a control chart is used correctly and the necessary corrective actions are taken,then as the control limits get close to each other,the potential quality of the product _____________.

Accepted Answer

A)  decreases 
B)  increases 
C)  stays the same 
D)  fluctuates 
A)  decreases 
B)  increases 
C)  stays the same 
D)  fluctuates

If a process is stable and in statistical control,it is not influenced by assignable causes of variation.

A control chart on which subgroup ranges are plotted versus time is a(n)_____ chart.

For a given control chart,zone boundaries consist of the UCL and LCL.

If = 2.0144, = .0972,and there are 25 subgroups of size 5,find the UCL and the LCL for the Chart.

Use this information about 10 shipments of lightbulbs.Shipment If 400 bulbs are selected at random from each of 10 shipments and the number of defectives in each shipment is given above,find the appropriate center line.

Common causes of variation represent the inherent variability of a given process.

How well a process is able to meet the requirements set forth by the process design is called the quality of design.

___________ causes of variation may be remedied by local supervision.

Assume that 25 samples of 50 each are taken and the total number of defectives is 34.Calculate .

If = 16.1, = .03,and n = 6,calculate the natural tolerance limits.

If a control chart is used correctly and the necessary corrective actions are taken,then as the control limits get close to each other,the potential quality of the product _____________.

An Introduction to Business Statistics

Descriptive Statistics: Tabular and Graphical Methods

Descriptive Statistics: Numerical Methods

Probability

Discrete Random Variables

Continuous Random Variables

Sampling and Sampling Distributions

Confidence Intervals

Hypothesis Testing

Statistical Inferences for Means and Proportions

Statistical Inferences for Population Variances

Experimental Design and Analysis of Variance

Chi-Square Tests

Simple Linear Regression Analysis

Multiple Regression and Model Building

Nonparametric Methods

Decision Theory

Filters

Exam 16: Time Series Forecasting and Index Numbers

If a process is stable and in statistical control,it is not influenced by assignable causes of variation.

A control chart on which subgroup ranges are plotted versus time is a(n)_____ chart.

For a given control chart,zone boundaries consist of the UCL and LCL.

If = 2.0144, = .0972,and there are 25 subgroups of size 5,find the UCL and the LCL for the Chart.

Use this information about 10 shipments of lightbulbs.Shipment If 400 bulbs are selected at random from each of 10 shipments and the number of defectives in each shipment is given above,find the appropriate center line.

Common causes of variation represent the inherent variability of a given process.

How well a process is able to meet the requirements set forth by the process design is called the quality of design.

___________ causes of variation may be remedied by local supervision.

Assume that 25 samples of 50 each are taken and the total number of defectives is 34.Calculate .

If = 16.1, = .03,and n = 6,calculate the natural tolerance limits.

If a control chart is used correctly and the necessary corrective actions are taken,then as the control limits get close to each other,the potential quality of the product _____________.

An Introduction to Business Statistics

Descriptive Statistics: Tabular and Graphical Methods

Descriptive Statistics: Numerical Methods

Probability

Discrete Random Variables

Continuous Random Variables

Sampling and Sampling Distributions

Confidence Intervals

Hypothesis Testing

Statistical Inferences for Means and Proportions

Statistical Inferences for Population Variances

Experimental Design and Analysis of Variance

Chi-Square Tests

Simple Linear Regression Analysis

Multiple Regression and Model Building

Nonparametric Methods

Decision Theory

Filters