Question 1

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

Accepted Answer

An in-control process is necessary to estimate process capability because a process that is not in control will have too much variation and the estimated capability will not be accurate.

Question 2

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 measure of a process's ability to consistently meet customer-driven requirements by comparing the process's performance to the specification limits. A process with high capability can meet the specified requirements consistently, while a process with low capability may create defects or non-conformance with the customer's requirements. Specification limits, upper and lower control limits, are measures of process performance and not the ability of the process to meet customer-driven requirements.

Question 3

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...

Question 4

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 CTQ characteristics is a part of the Measure phase in the DMAIC process. During this phase, data is collected, measurements are taken, and the problem is quantified to establish a baseline that serves as a benchmark for the improvement process. Developing operational definitions for each CTQ ensures that accurate and consistent data is collected during the Measure phase.

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, based on the R chart, it appears that the process is out of control.

Accepted Answer

The statement cannot be verified as true or false without access to Table 17-8 and the specific R chart data it contains.

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, 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...

Question 7

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...

Question 8

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...

Question 9

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

The Analyze phase of the DMAIC process involves identifying the root causes of a problem, including the variables in the process that contribute to defects. This phase typically involves data analysis, problem-solving techniques like the 5 Whys or Fishbone diagram, and other tools to uncover the underlying causes of defects.

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, 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...

Question 11

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...

Question 12

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 method for breaking process into a series of steps in order to eliminate defects and produce near perfect results. It uses statistical analysis to identify and eliminate sources of variability in the process. Deming's 14 points management is a system of management based on principles such as continuous improvement and quality control, but it does not specifically focus on breaking down processes into steps. The Shewhart-Deming cycle (also known as the PDCA cycle) is a method for continuous improvement that involves four steps: Plan, Do, Check, Act. The R chart and 11ea2ff8_fd53_bdfb_b1b9_5bb9fd1e6d2a_TB1602_11 chart are tools used in statistical process control to monitor process variability, but they do not involve breaking down processes into steps.

Question 13

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 focuses on ensuring that the improvements made during the Improve phase are sustained over the long term. This involves implementing a plan for monitoring the process, establishing metrics to measure performance, and developing procedures for taking corrective action if problems arise. Therefore, the correct answer is E) Control.

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 
  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...

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 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...

Question 16

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...

Question 17

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

Accepted Answer

The smaller the capability index, the less capable a process is of meeting customer requirements. A larger capability index indicates that a process is more capable of meeting customer requirements.

Question 18

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 includes Define, Measure, Analyze, Improve, and Control. "Do" is not a part of the DMAIC process.

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, 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...

Question 20

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

Accepted Answer

A process capability is estimated by the percentage of product or service that fall within the specification limits, not outside. It measures how well a process can produce output within specified limits.

Quiz 17: Statistical Applications in Quality Management

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

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

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

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?

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?

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

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.