Question 1

Find the control limits for a p-chart with   = 0.22 and s = 0.047.

Accepted Answer

LCL = 0.07

Question 2

For constructing a p-chart,it is recommended that ________.

Accepted Answer

A) a minimum of 100 samples be taken,each with a minimum sample size of 25 
B) a minimum of 10 samples be taken,each with a minimum sample size of 30 
C) a minimum of 1776 samples be taken,each with a minimum sample size of 74 
D) a minimum of 25 samples be taken,each with a minimum sample size of 100 
A) a minimum of 100 samples be taken,each with a minimum sample size of 25 
B) a minimum of 10 samples be taken,each with a minimum sample size of 30 
C) a minimum of 1776 samples be taken,each with a minimum sample size of 74 
D) a minimum of 25 samples be taken,each with a minimum sample size of 100

Question 3

The R-chart monitors the variability in the data over time by plotting the ________.

Accepted Answer

A) mean of each sample 
B) range of each sample 
C) sum of each sample 
D) size of each sample 
A) mean of each sample 
B) range of each sample 
C) sum of each sample 
D) size of each sample

Question 4

For Super Soil,the lower specification fill weight is 35.0 pounds and the upper specification fill weight is 35.5 pounds.The filling process has a standard deviation of 0.4 pounds and the process is in control.Find the process capability index.

Accepted Answer

A) 0.208 
B) 1.25 
C) 88.75 
D) 0.1 
A) 0.208 
B) 1.25 
C) 88.75 
D) 0.1

Question 5

The process capability index is calculated by ________.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 6

Find the control limits for the R-chart with   = 5,and sample size of 14.

Accepted Answer

LCL = 1.64 and UCL =

Question 7

What is the standard deviation if the proportion is 0.18 found from ten samples each of size 100,twelve samples each of size 128,fifteen samples each of size 120,and eight samples each of size 125?

Accepted Answer

A) 0.077 
B) 0.068 
C) 0.035 
D) 0.059 
A) 0.077 
B) 0.068 
C) 0.035 
D) 0.059

Question 8

For a process that is in control,a quantitative sample statistic will run randomly between ________.

Accepted Answer

A) μ ± 3σ 
B)    ±   
C) μ ± σ 
D)    ± sx 
A) μ ± 3σ 
B)    ±   
C) μ ± σ 
D)    ± sx

Question 9

Control limits are chosen statistically so that there is a high probability that sample statistics will fall randomly between the lower control limit and the upper control limit if the process is in control.

Accepted Answer

A) True 
 B)False

Question 10

Differentiate between control limits and specification limits.

Accepted Answer

The upper and lower control limits are s

Question 11

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

Accepted Answer

A) percent of customers rating a service a 5 on a ten-point scale 
B) number of defective pieces in a shipment of parts 
C) the time between an order and its delivery 
D) the number of errors on an invoice 
A) percent of customers rating a service a 5 on a ten-point scale 
B) number of defective pieces in a shipment of parts 
C) the time between an order and its delivery 
D) the number of errors on an invoice

Question 12

Find the control limits for the R-chart with      = 0.02 and sample size of 15.

Accepted Answer

A) LCL = 0.007 and UCL = 0.033 
B) LCL = 0.004 and UCL = 0.004 
C) LCL = 0.003 and UCL = 0.007 
D) The R is too small to determine control limits. 
A) LCL = 0.007 and UCL = 0.033 
B) LCL = 0.004 and UCL = 0.004 
C) LCL = 0.003 and UCL = 0.007 
D) The R is too small to determine control limits.

Question 13

Find the control limits for the R-chart with   = 0.0285 and sample size of 5.

Accepted Answer

A) LCL = 0 and UCL = 0.065 
B) LCL = 0 and UCL = 0.060 
C) LCL = 0.021 and UCL = 0.065 
D) The sample size is too small to determine control limits. 
A) LCL = 0 and UCL = 0.065 
B) LCL = 0 and UCL = 0.060 
C) LCL = 0.021 and UCL = 0.065 
D) The sample size is too small to determine control limits.

Question 14

What is the standard deviation if a proportion of 0.094 is found from 25 samples each of size 200?

Accepted Answer

A) 0.0637 
B) 0.0653 
C) 0.0004 
D) 0.0206 
A) 0.0637 
B) 0.0653 
C) 0.0004 
D) 0.0206

Question 15

Compare and contrast the situations of data hugging the center line of a control chart and data hugging the control limits.

Accepted Answer

a.Hugging the center line occurs when ne

Question 16

The sample statistics will fall randomly within the lower and the upper control limits when the process is in statistical control.

Accepted Answer

A) True 
 B)False

Question 17

What are the basic steps of statistical process control?

Accepted Answer

Statistical process control consists of

Question 18

The nominal specification is the ________.

Accepted Answer

A) expected value 
B) target value 
C) minimum value 
D) maximum value 
A) expected value 
B) target value 
C) minimum value 
D) maximum value

Question 19

The more uniform or consistent a process is performing will be seen by ________.

Accepted Answer

A) a larger value for the range 
B) a predictable value for the range 
C) a smaller value for the range 
D) an infinite value for the range 
A) a larger value for the range 
B) a predictable value for the range 
C) a smaller value for the range 
D) an infinite value for the range

Question 20

R-charts are ________ if the calculations are done manually by a process worker on the factory floor.

Accepted Answer

A) more accurate than charts based on the standard deviation 
B) more useful than x-charts 
C) the only way to determine if a process is under control 
D) easy to construct and use 
A) more accurate than charts based on the standard deviation 
B) more useful than x-charts 
C) the only way to determine if a process is under control 
D) easy to construct and use

Find the control limits for a p-chart with = 0.22 and s = 0.047.

For constructing a p-chart,it is recommended that ________.

The R-chart monitors the variability in the data over time by plotting the ________.

For Super Soil,the lower specification fill weight is 35.0 pounds and the upper specification fill weight is 35.5 pounds.The filling process has a standard deviation of 0.4 pounds and the process is in control.Find the process capability index.

The process capability index is calculated by ________.

Find the control limits for the R-chart with = 5,and sample size of 14.

What is the standard deviation if the proportion is 0.18 found from ten samples each of size 100,twelve samples each of size 128,fifteen samples each of size 120,and eight samples each of size 125?

For a process that is in control,a quantitative sample statistic will run randomly between ________.

Control limits are chosen statistically so that there is a high probability that sample statistics will fall randomly between the lower control limit and the upper control limit if the process is in control.

Differentiate between control limits and specification limits.

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

Find the control limits for the R-chart with = 0.02 and sample size of 15.

Find the control limits for the R-chart with = 0.0285 and sample size of 5.

What is the standard deviation if a proportion of 0.094 is found from 25 samples each of size 200?

Compare and contrast the situations of data hugging the center line of a control chart and data hugging the control limits.

The sample statistics will fall randomly within the lower and the upper control limits when the process is in statistical control.

What are the basic steps of statistical process control?

The nominal specification is the ________.

The more uniform or consistent a process is performing will be seen by ________.

R-charts are ________ if the calculations are done manually by a process worker on the factory floor.

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 = 0.22 and s = 0.047.

For constructing a p-chart,it is recommended that ________.

The R-chart monitors the variability in the data over time by plotting the ________.

For Super Soil,the lower specification fill weight is 35.0 pounds and the upper specification fill weight is 35.5 pounds.The filling process has a standard deviation of 0.4 pounds and the process is in control.Find the process capability index.

The process capability index is calculated by ________.

Find the control limits for the R-chart with = 5,and sample size of 14.

What is the standard deviation if the proportion is 0.18 found from ten samples each of size 100,twelve samples each of size 128,fifteen samples each of size 120,and eight samples each of size 125?

For a process that is in control,a quantitative sample statistic will run randomly between ________.

Control limits are chosen statistically so that there is a high probability that sample statistics will fall randomly between the lower control limit and the upper control limit if the process is in control.

Differentiate between control limits and specification limits.

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

Find the control limits for the R-chart with = 0.02 and sample size of 15.

Find the control limits for the R-chart with = 0.0285 and sample size of 5.

What is the standard deviation if a proportion of 0.094 is found from 25 samples each of size 200?

Compare and contrast the situations of data hugging the center line of a control chart and data hugging the control limits.

The sample statistics will fall randomly within the lower and the upper control limits when the process is in statistical control.

What are the basic steps of statistical process control?

The nominal specification is the ________.

The more uniform or consistent a process is performing will be seen by ________.

R-charts are ________ if the calculations are done manually by a process worker on the factory floor.

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