Question 1

Find the control limits for a p-chart with   = 0.54 found from thirty-five samples each of size 250.

Accepted Answer

A) LCL = 0.57 and UCL = 0.51 
B) LCL = 0.45 and UCL = 0.63 
C) LCL = 0.48 and UCL = 0.60 
D) LCL = 0 and UCL = 0.03 
A) LCL = 0.57 and UCL = 0.51 
B) LCL = 0.45 and UCL = 0.63 
C) LCL = 0.48 and UCL = 0.60 
D) LCL = 0 and UCL = 0.03

Question 2

The distinction between quality control attributes and variables is not an important one because the same statistical process control tools are used for both.

Accepted Answer

A) True 
 B)False

Question 3

The lower specification for ChocoChips candy kiddie bag is 12 candies while the upper specification limit is 15 candies.The standard deviation is 2 candies.If the process is in control,what is the process capability index?

Accepted Answer

A) 1.47 
B) 8.82 
C) 0.25 
D) 1.5 
A) 1.47 
B) 8.82 
C) 0.25 
D) 1.5

Question 4

Find the control limits for a p-chart with   = 0.022 obtained from fifty samples each of size 150.

Accepted Answer

A) LCL = -0.01 and UCL = 0.06 
B) LCL = 0.19 and UCL = 0.25 
C) LCL = -0.07 and UCL = 0.37 
D) LCL = 0 and UCL = 0.06 
A) LCL = -0.01 and UCL = 0.06 
B) LCL = 0.19 and UCL = 0.25 
C) LCL = -0.07 and UCL = 0.37 
D) LCL = 0 and UCL = 0.06

Question 5

The most common control chart for attributes (qualitative data)is the ________.

Accepted Answer

A)    -chart 
B) PHStat chart 
C) p-chart 
D)    -chart 
A)    -chart 
B) PHStat chart 
C) p-chart 
D)    -chart

Question 6

Control limits are based on ________.

Accepted Answer

A) past process performance 
B) legal requirements 
C) product specifications 
D) ethical standards 
A) past process performance 
B) legal requirements 
C) product specifications 
D) ethical standards

Question 7

A run chart is a line chart in which ________.

Accepted Answer

A) the dependent variable is time and the independent variable is the value of some sample statistic 
B) the independent variable is time and the dependent variable is the value of some sample statistic 
C) the independent and the dependent variables are the same 
D) the independent variable is the overall production costs and the dependent variable is time 
A) the dependent variable is time and the independent variable is the value of some sample statistic 
B) the independent variable is time and the dependent variable is the value of some sample statistic 
C) the independent and the dependent variables are the same 
D) the independent variable is the overall production costs and the dependent variable is time

Question 8

Find the control limits for a p-chart with   = 0.75 and s = 0.06.

Accepted Answer

A) LCL = 0.39 and UCL = 0.75 
B) LCL = 0.69 and UCL = 0.81 
C) LCL = 0.57 and UCL = 0.93 
D) LCL = 0 and UCL = 0.06 
A) LCL = 0.39 and UCL = 0.75 
B) LCL = 0.69 and UCL = 0.81 
C) LCL = 0.57 and UCL = 0.93 
D) LCL = 0 and UCL = 0.06

Question 9

Find the control limits for the   -chart with   = 34.5,   = 7,and sample size of 12.

Accepted Answer

A) LCL = 32.505 and UCL = 36.495 
B) LCL = -49.5 and UCL = 118.5 
C) LCL = 34.302 and UCL = 34.698 
D) LCL = 32.638 and UCL = 36.362 
A) LCL = 32.505 and UCL = 36.495 
B) LCL = -49.5 and UCL = 118.5 
C) LCL = 34.302 and UCL = 34.698 
D) LCL = 32.638 and UCL = 36.362

Question 10

The control limits for the   -chart are found by using ________.

Accepted Answer

A)    ± 3R 
B)    ± A     
C)    ± R 
D)     ± 3sx 
A)    ± 3R 
B)    ± A     
C)    ± R 
D)     ± 3sx

Question 11

The special causes of variation ________.

Accepted Answer

A) cannot be identified 
B) cannot be eliminated 
C) cannot be explained 
D) can be identified and either eliminated or at least explained 
A) cannot be identified 
B) cannot be eliminated 
C) cannot be explained 
D) can be identified and either eliminated or at least explained

Question 12

The formula for finding the standard deviation for a p-chart using a variable sample size is ________.

Accepted Answer

A) s =   
B) s =   
C) s =   
D) s =   
A) s =   
B) s =   
C) s =   
D) s =

Question 13

Find the control limits for the   -chart with   = 14.5,   = 3,and sample size of 13.

Accepted Answer

LCL = 13.753 and UCL

Question 14

A process is considered to be under control when all of the following are true except ________.

Accepted Answer

A) only special causes of variation are present 
B) variation in the distribution of output is due to common causes 
C) only common causes of variation are present 
D) the process output is stable and predictable 
A) only special causes of variation are present 
B) variation in the distribution of output is due to common causes 
C) only common causes of variation are present 
D) the process output is stable and predictable

Question 15

Which of the following is an example of quality control attributes?

Accepted Answer

A) the weight of a carton of cereal 
B) number of defective pieces in a shipment of parts 
C) inside diameter of drilled hole 
D) the time between an order and its delivery 
A) the weight of a carton of cereal 
B) number of defective pieces in a shipment of parts 
C) inside diameter of drilled hole 
D) the time between an order and its delivery

Question 16

Find the control limits for a p-chart using the below information:

Accepted Answer

A) LCL = 0.019 and UCL = 0.069 
B) LCL = 0 and UCL = 0.016 
C) LCL = 0.004 and UCL = 0.20 
D) LCL = 0 and UCL = 0.069 
A) LCL = 0.019 and UCL = 0.069 
B) LCL = 0 and UCL = 0.016 
C) LCL = 0.004 and UCL = 0.20 
D) LCL = 0 and UCL = 0.069

Question 17

If the sample sizes for attributes data are not the same,the data is not usable for control chart purposes.

Accepted Answer

A) True 
 B)False

Question 18

The formula for finding the standard deviation for a p-chart using a constant sample size is ________.

Accepted Answer

A) s =   
B) s =   
C) s =   
D) s =   
A) s =   
B) s =   
C) s =   
D) s =

Question 19

What is the standard deviation if a proportion of 0.44 is found from twenty samples of size 116,twenty samples of size 114,and three samples of size 112?

Accepted Answer

A) 0.130 
B) 0.164 
C) 0.103 
D) 0.046 
A) 0.130 
B) 0.164 
C) 0.103 
D) 0.046

Question 20

All of the following are important elements of process capability except ________.

Accepted Answer

A) the design specifications 
B) the centering of the process 
C) the range of variation 
D) the control limits 
A) the design specifications 
B) the centering of the process 
C) the range of variation 
D) the control limits

Find the control limits for a p-chart with = 0.54 found from thirty-five samples each of size 250.

The distinction between quality control attributes and variables is not an important one because the same statistical process control tools are used for both.

The lower specification for ChocoChips candy kiddie bag is 12 candies while the upper specification limit is 15 candies.The standard deviation is 2 candies.If the process is in control,what is the process capability index?

Find the control limits for a p-chart with = 0.022 obtained from fifty samples each of size 150.

The most common control chart for attributes (qualitative data)is the ________.

Control limits are based on ________.

A run chart is a line chart in which ________.

Find the control limits for a p-chart with = 0.75 and s = 0.06.

Find the control limits for the -chart with = 34.5, = 7,and sample size of 12.

The control limits for the -chart are found by using ________.

The special causes of variation ________.

The formula for finding the standard deviation for a p-chart using a variable sample size is ________.

Find the control limits for the -chart with = 14.5, = 3,and sample size of 13.

A process is considered to be under control when all of the following are true except ________.

Which of the following is an example of quality control attributes?

Find the control limits for a p-chart using the below information:

If the sample sizes for attributes data are not the same,the data is not usable for control chart purposes.

The formula for finding the standard deviation for a p-chart using a constant sample size is ________.

What is the standard deviation if a proportion of 0.44 is found from twenty samples of size 116,twenty samples of size 114,and three samples of size 112?

All of the following are important elements of process capability except ________.

Data and Business Decisions

Descriptive Statistics and Data Analysis

Probability Concepts and Distributions

Sampling and Estimation

Hypothesis Testing and Statistical Inference

Regression Analysis

Forecasting

Building and Using Decision Models

Decision Models With Uncertainty and Risk

Decisions, uncertainty, and Risk

Queues and Process Simulation Modeling

Linear Optimization

Integer, nonlinear, and Advanced Optimization Methods

Filters

Exam 8: Introduction to Statistical Quality Control

Find the control limits for a p-chart with = 0.54 found from thirty-five samples each of size 250.

The distinction between quality control attributes and variables is not an important one because the same statistical process control tools are used for both.

The lower specification for ChocoChips candy kiddie bag is 12 candies while the upper specification limit is 15 candies.The standard deviation is 2 candies.If the process is in control,what is the process capability index?

Find the control limits for a p-chart with = 0.022 obtained from fifty samples each of size 150.

The most common control chart for attributes (qualitative data)is the ________.

Control limits are based on ________.

A run chart is a line chart in which ________.

Find the control limits for a p-chart with = 0.75 and s = 0.06.

Find the control limits for the -chart with = 34.5, = 7,and sample size of 12.

The control limits for the -chart are found by using ________.

The special causes of variation ________.

The formula for finding the standard deviation for a p-chart using a variable sample size is ________.

Find the control limits for the -chart with = 14.5, = 3,and sample size of 13.

A process is considered to be under control when all of the following are true except ________.

Which of the following is an example of quality control attributes?

Find the control limits for a p-chart using the below information:

If the sample sizes for attributes data are not the same,the data is not usable for control chart purposes.

The formula for finding the standard deviation for a p-chart using a constant sample size is ________.

What is the standard deviation if a proportion of 0.44 is found from twenty samples of size 116,twenty samples of size 114,and three samples of size 112?

All of the following are important elements of process capability except ________.

Data and Business Decisions

Descriptive Statistics and Data Analysis

Probability Concepts and Distributions

Sampling and Estimation

Hypothesis Testing and Statistical Inference

Regression Analysis

Forecasting

Building and Using Decision Models

Decision Models With Uncertainty and Risk

Decisions, uncertainty, and Risk

Queues and Process Simulation Modeling

Linear Optimization

Integer, nonlinear, and Advanced Optimization Methods

Filters