Question 1

Determining the root causes of why defects can occur along with the variables in the process that cause these defects to occur involves which part of the DMAIC process?
A)Define
B)Measure
C)Analyze
D)Improve
E)Control

Accepted Answer

Analyze is the stage where the root cause of the problem is identified by scrutinizing the collected data from the previous stages of DMAIC (Define and Measure). In this stage, variables are analyzed to see which ones are causing the defects to occur. Therefore, the root causes of why defects are occurring in the process are determined in the Analyze stage of the DMAIC process.

Question 2

TABLE 17-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
 
-Referring to Table 17-8,construct an R chart for the time required to register.

Accepted Answer

The answer of TABLE 17-8
Recently,a university switched to a new...

Question 3

Which of the following is a method for breaking process into a series of steps in order to eliminate defects and produce near perfect results?
A)Deming's 14 points management
B)Six Sigma management
C)Shewhart-Deming cycle
D)R chart and chart

Accepted Answer

Six Sigma management is a methodology used to eliminate defects and produce near-perfect results by breaking down processes into a series of steps, identifying potential sources of error, and implementing measures to prevent them. The other options listed are quality management techniques but do not specifically focus on breaking down processes into steps to eliminate defects.

Question 4

An in-control process must be achieved before being able to estimate process capability.

Accepted Answer

To estimate process capability, the process must first be in a state of control, meaning it is stable and predictable. This is because process capability is a measure of how well the process can meet customer requirements, and if the process is not in control, it may be producing inconsistent results that do not accurately reflect its true capability.

Question 5

TABLE 17-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
 
-Referring to Table 17-8,an R chart is to be constructed for the time required to register.The lower control limit for this data set is ________.

Accepted Answer

The answer of TABLE 17-8
Recently,a university switched to a new...

Question 6

TABLE 17-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
 
-Referring to Table 17-8,based on the  chart,it appears that the process is in control.

Accepted Answer

The answer of TABLE 17-8
Recently,a university switched to a new...

Question 7

Developing operational definitions for each critical-to-quality characteristic involves which part of the DMAIC process?
A)Define
B)Measure
C)Analyze
D)Improve
E)Control

Accepted Answer

Developing operational definitions for each critical-to-quality characteristic falls under the "Measure" phase of the DMAIC process. In this phase, the focus is on gathering data and measuring the current state of the process or product to identify areas for improvement. Part of this involves defining the critical-to-quality characteristics and developing operational definitions to ensure consistent and accurate measurement.

Question 8

The smaller the capability index,the more capable a process is of meeting customer requirements.

Accepted Answer

This statement is incorrect. The capability index measures the ability of a process to meet customer requirements. The higher the capability index, the more capable the process is of meeting customer requirements, as it means the process has less variability and is more consistent.

Question 9

TABLE 17-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
 
-Referring to Table 17-8,an  chart is to be used for the time required to register.One way to obtain the control limits is to take the grand mean and add and subtract the product of A₂ times the mean of the sample ranges.For this data set,the value of A₂ is ________.

Accepted Answer

The answer of TABLE 17-8
Recently,a university switched to a new...

Question 10

TABLE 17-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
 
-Referring to Table 17-8,construct an  chart for the time required to register.

Accepted Answer

The answer of TABLE 17-8
Recently,a university switched to a new...

Question 11

Which of the following best measures the ability of a process to consistently meet specified customer-driven requirement?
A)Process capability.
B)Specification limits
C)Upper control limit
D)Lower control limit

Accepted Answer

Process capability is the best measure of a process's ability to consistently meet customer-driven requirements. It compares the variation of the process output to the customer's specifications and calculates the process capability index (Cpk) which indicates whether the process is capable of meeting the specifications. The specification limits, upper control limit, and lower control limit are all used in statistical process control to monitor and control the process, but they do not directly measure the process's ability to meet customer requirements.

Question 12

Which of the following is not part of the DMAIC process in Six Sigma management?
A)Define
B)Do
C)Analyze
D)Control

Accepted Answer

The DMAIC process in Six Sigma management consists of five steps: Define, Measure, Analyze, Improve, and Control. "Do" is not a part of this process.

Question 13

A process capability is estimated by the percentage of product or service that fall outside the specification limits.

Accepted Answer

The answer of A process capability is estimated by the...

Question 14

TABLE 17-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
 
-Referring to Table 17-8,an R chart is to be constructed for the time required to register.The upper control limit for this data set is ________.

Accepted Answer

The answer of TABLE 17-8
Recently,a university switched to a new...

Question 15

TABLE 17-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
 
-Referring to Table 17-8,an R chart is to be constructed for the time required to register.One way to create the upper control limit involves multiplying the mean of the sample ranges by D₄.For this data set,the value of D₄ is ________.

Accepted Answer

The answer of TABLE 17-8
Recently,a university switched to a new...

Question 16

Maintaining the gains that have been made with a revised process in the long term by avoiding potential problems that can occur when a process is changed involves which part of the DMAIC process?
A)Define
B)Measure
C)Analyze
D)Improve
E)Control

Accepted Answer

The control phase of the DMAIC process is focused on sustaining the improvements made during the previous phases. It involves creating a plan for ongoing monitoring, measuring, and controlling to prevent the process from reverting back to its previous state. Therefore, maintaining the gains made with a revised process in the long term involves the control phase.

Question 17

TABLE 17-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
 
-Referring to Table 17-8,an R chart is to be constructed for the time required to register.One way to create the lower control limit involves multiplying the mean of the sample ranges by D₃.For this data set,the value of D₃ is ________.

Accepted Answer

The answer of TABLE 17-8
Recently,a university switched to a new...

Question 18

TABLE 17-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
 
-Referring to Table 17-8,based on the R chart,it appears that the process is out of control.

Accepted Answer

The answer of TABLE 17-8
Recently,a university switched to a new...

Question 19

TABLE 17-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
 
-Referring to Table 17-8,an  chart is to be used for the time required to register.The center line of this chart is located at ________.

Accepted Answer

The answer of TABLE 17-8
Recently,a university switched to a new...

Question 20

TABLE 17-8
Recently,a university switched to a new type of computer-based registration.The registrar is concerned with the amount of time students are spending on the computer registering under the new system.She decides to randomly select 8 students on each of the 12 days of the registration and determine the time each spends on the computer registering.The range,mean,and standard deviation of the times required to register are in the table that follows.
 
-Referring to Table 17-8,an  chart is to be used for the time required to register.The lower control limit for this data set is ________,while the upper control limit is ________.

Accepted Answer

The answer of TABLE 17-8
Recently,a university switched to a new...

Quiz 17: Statistical Applications in Quality Management

Determining the root causes of why defects can occur along with the variables in the process that cause these defects to occur involves which part of the DMAIC process?

Which of the following is a method for breaking process into a series of steps in order to eliminate defects and produce near perfect results?

An in-control process must be achieved before being able to estimate process capability.

Developing operational definitions for each critical-to-quality characteristic involves which part of the DMAIC process?

The smaller the capability index,the more capable a process is of meeting customer requirements.

Which of the following best measures the ability of a process to consistently meet specified customer-driven requirement?

Which of the following is not part of the DMAIC process in Six Sigma management?

A process capability is estimated by the percentage of product or service that fall outside the specification limits.

Maintaining the gains that have been made with a revised process in the long term by avoiding potential problems that can occur when a process is changed involves which part of the DMAIC process?