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Worksheetscong cu thong ke
Total questions: 125
Worksheet time: 1hrs 13mins
What is the concept of quality understood as?
Complete technical requirement fulfillment
Satisfaction of reasonable customer expectations
Manufacturer's control
Lowest price
According to Professor Juran, what is quality?
Meeting customer expectations
Conformance to certain requirements
Conformance to needs
Minimizing production costs
Which chart is used to identify the main cause of a problem?
Pareto chart
Control chart
Scatter plot
Cause-and-effect diagram
What is the main purpose of the Pareto chart?
Identify the relationship between two variables
Classify causes by their level of importance
Control product quality
Store information
What is the control chart typically used for?
Collecting and storing data
Identifying the relationship between two factors
Calculating correlation coefficient
Measuring dispersion
In the histogram, what does the horizontal axis represent?
Frequency of occurrence of the issue
Amount of collected data
Data values
Width of the intervals between classes
What is the first step in the process of drawing a Pareto chart?
Draw the chart
List activities and count occurrences
Calculate total occurrences
Analyze results
Flow charts are used to:
Identify the cause of a problem
Monitor the distribution of parameters
Represent a sequence of necessary steps
Control product quality
What components does a control chart include?
Central control line, upper and lower limits
Central line and standard deviation
Trend line and central line
Frequency and standard deviation
What does a scatter plot signify in quality analysis?
Measuring the variation of characteristics
Indicating
What does a scatter plot signify in quality analysis?
Measuring changes in characteristics
Indicating the relationship between two variables
Classifying data by frequency
Evaluating the distribution of parameters
Which chart shows the distribution of product parameters during production?
Pareto chart
Scatter plot
Histogram
Control chart
What is the goal of quality management?
Meeting the needs of the producer
Meeting and exceeding customer expectations
Optimizing the company's profits
Minimizing financial risks
Which chart is used to check the stability of a process?
Control chart
Causal chart
Pareto chart
Scatter plot
What principle is the Pareto chart based on?
90 - 10
70 - 30
80 - 20
60 - 40
What is the benefit of using a control chart?
Optimizing the production process
Systematically tracking and storing data
Evaluating supplier capabilities
Controlling product price levels
Which of the following causes can lead to a control chart indicating an unstable process?
Data outside the control limits
Data points within the control limits
Data concentrated around the center line
Data trends evenly
When is a flowchart typically applied?
When needing to summarize frequency data
When needing to optimize costs
When a team is working on a process improvement
When analyzing data distribution
Which chart shows the relationship between costs and revenues in a company?
Pareto chart
Scatter plot
Control chart
Density chart
Which chart shows the relationship between cost and revenue in a company?
Pareto chart
Scatter plot
Control chart
Density distribution chart
What is the first step when building a control chart?
Calculate the average value
Collect data
Find the maximum and minimum values
Determine the control line
What causes can be identified through an Ishikawa chart?
Sub-causes of a quality issue
Distribution of products in the market
Frequency of production errors
Relationship between cost and profit
Which chart shows the distribution of data across different frequency classes?
Pareto chart
Density distribution chart (Histogram)
Control chart
Scatter plot
What is one of the benefits of the 7 statistical tools in quality management?
Increase production costs
Detect and eliminate errors before mass production
Conduct comprehensive checks on final products
Minimize customer requirements
When should a scatter plot be used?
When needing to identify the main cause of an issue
When wanting to examine the relationship between two variables
When needing to classify errors by severity
When wanting to store test data
In a control chart, what does the center line represent?
Maximum limit line
Minimum limit line
Average value of the process
Average value of the errors that occur
What is the main goal of using statistical tools in quality management?
Increase production output
Reduce labor costs
Improve and ensure product quality
Enhance profits
What is statistical control in quality management?
Increase production output
Reduce labor costs
Improve and ensure product quality
Increase profits
Which symbol is commonly used in flowcharts to represent a decision point?
Rectangle
Circle
Diamond
Arrow
In a Pareto chart, which factor should be focused on?
The factor with the lowest frequency
The factor with the least impact on quality
The factor with the highest frequency
The factor with the highest cost
Which chart uses bars to illustrate phenomena and causes by frequency?
Control chart
Cause-and-effect chart
Pareto chart
Control sheet
What is the first requirement for building an X-R control chart?
Calculate the standard deviation
Find the centerline
Collect representative data for the process
Count the number of defects
When data in a scatter plot shows an inverse relationship, what does this mean?
X increases, Y increases
X increases, Y decreases
Y is independent of X
X decreases, Y increases
What is the main purpose of a control chart?
To identify the cause of quality issues
To control the stability of the production process
To classify defects by importance
To monitor production costs
What is the final step when constructing a Pareto chart?
Calculate the total occurrences of defects
Sort defects by frequency
Analyze results and identify defects to prioritize
Draw the chart
Which chart allows for the analysis of data dispersion around the mean?
Control chart
Density distribution chart (Histogram)
Cause-and-effect chart
Scatter plot
Which data is not suitable for collection through a control sheet?
Frequency of product defects
Customer feedback information
Which data below is not suitable for collection through a control chart?
Frequency of product defects
Customer feedback information
Shipping time
Production cost
What does the 'bell' shape of the density distribution chart represent?
A process with many fluctuations
A stable process
Unevenly distributed data
No uniformity in the process
In the Ishikawa diagram, what is 'Materials'?
A result
A main cause
A secondary cause
A control tool
What tool is used to assess the conformity of the production process to technical standards?
Control chart
Pareto chart
Scatter plot
Flowchart
What is the benefit of using a scatter plot?
Classifying defects by frequency
Controlling the stability of the process
Identifying the relationship between two variables
Storing customer information
Which type of chart can help detect data points outside control limits?
Causal diagram
Control chart
Density distribution chart
Control sheet
In a Pareto chart, what does the cumulative curve represent?
Number of production defects
Frequency of defects over time
Cumulative percentage of defects
Cumulative percentage of production costs
What is another name for the causal diagram?
Pareto chart
Fishbone diagram
Scatter plot
Control chart
When data in a control chart is outside the upper limit, what does this mean?
Stable process
Abnormal process
Data is faulty
Increase frequency of checks
In a Pareto chart, what does group A represent?
What does this mean?
Stable process
Abnormal process
Data error
Increase inspection frequency
In the Pareto chart, what does group A represent?
Less important factors
Factors that account for 80% of importance
Factors that do not need much attention
Factors that account for 20% of importance
What does the scatter plot help determine between two variables?
Data classification
Frequency distribution
Dependent relationship
Standard deviation
How does the Pareto chart assist quality management?
Helps identify specific product defects
Helps identify important defects to prioritize
Analyzes the rate of compliant products
Enhances stability in production
What factors does a control chart typically include?
Error name, cause, corrective action
Error code, number of errors, inspection date
Inspection location, supervisor, production result
Cost, time, efficiency
What characteristic does the X-R control chart monitor?
Frequency of errors
Size and variability of the process
Production speed
Production time
Which of the following is not a benefit of a Flow Chart?
Simplifying the workflow
Helping employees understand the process
Monitoring production costs
Achieving consistency in the process
What does the 'sawtooth' shape of the density distribution chart indicate?
Stable process
Unevenly distributed data
Perfect production process
Data concentrated around the central value
What is the first step in building a flowchart?
Check the current process
List activities in order
Draw steps in order
Identify the process goal
Which chart helps identify important factors?
What is a flowchart?
Check the current process
List activities in order
Draw steps in order
Identify the goals of the process
Which chart helps identify important factors in product quality?
Scatter plot
Pareto chart
Density distribution chart
Control chart
What is one of the main causes in the fishbone diagram?
Result
Product
Raw materials
Market
What issue does the control chart help detect in production?
Changes in product quality
High production costs
Increased labor productivity
Reduced production costs
What is the first step before analyzing the density distribution chart?
Determine the average value
Identify the minimum and maximum values of the data
Calculate the correlation coefficient
Draw the control line
What is the significance of using control charts in quality management?
Control the level of product variability
Classify product defects
Increase the number of compliant products
Reduce the frequency of product inspections
What does the Pareto chart focus on?
The least important factor
The most important factor to improve
The least frequent factor
The least impactful factor on quality
What does the density distribution chart show about the measured values of the production process?
Frequency of occurrence of measured values
Causes of incidents
Relationships between factors
Percentage of production errors
What is the main goal of the Ishikawa diagram?
Analyze production costs
Identify the causes of quality issues
Control variability in production
Monitor production progress
What is the first step in building a density distribution chart?
What is the first step in building a distribution density chart?
Collect data through checklists
Draw control limits
Analyze the average value
Identify the factors causing errors
What lines does the X-R control chart include?
Center line and control limits
Frequency line and variation line
Error line and control line
Boundary line and variation line
What is the significance of the Pareto chart in quality management?
Enhance product stability
Identify the least common errors
Help focus on the most important factors
Analyze the degree of data dispersion
A scatter plot shows the relationship between two variables X and Y. When X increases, Y decreases. What is this relationship?
Direct relationship
Inverse relationship
No relationship
Random relationship
In a flowchart, what does the rectangular symbol represent?
Decision point
Start or end point
Step in the process
Transition between steps
What does the control chart help identify?
Frequency of product errors
Stability of the process
Production costs
Changes in customer demand
What does the 'skewed to one side' shape of the distribution density chart indicate?
Stable process
Even dispersion
Abnormal issues in the process
All measured values meet standards
What is the last step in building a control chart?
Draw the chart and note necessary information
Calculate the standard deviation
Sum the values
Check values outside control limits
What is the purpose of building a control chart?
Draw the chart and note the necessary information
Calculate the standard deviation
Calculate the total value
Check the out-of-control values
When should a fishbone diagram (Ishikawa diagram) be used?
When determining the degree of data dispersion
When identifying the cause of a problem
When monitoring the frequency of errors
When controlling production costs
What is the main objective of a control chart?
Check the standard deviation of the product
Classify errors by severity
Collect and store data on product errors
Measure the degree of data dispersion
Which chart helps evaluate whether a process complies with control limits?
Causal diagram
Pareto chart
Control chart
Density distribution chart
What is the first step in creating a scatter plot?
Collect pairs of data for two variables
Calculate the correlation coefficient
Plot the points on the chart
Determine the average value of the data
What is the significance of the Pareto chart in quality management?
Enhance product stability
Identify the least common errors
Help focus on the most important factors
Analyze the degree of data dispersion
A scatter plot shows the relationship between two variables X and Y. When X increases, Y decreases. What type of relationship is this?
Direct relationship
Inverse relationship
No relationship
Random relationship
In a flowchart, what does a rectangular symbol represent?
Decision point
Start or end point
Step in the process
Transition between steps
What does a control chart help identify?
Frequency of product errors
Stability of the process
What does the control chart help to determine?
Product defect frequency
Process stability
Production cost
Changes in customer demand
What does the 'one-sided slope' shape of the density distribution chart indicate?
Stable process
Uniform dispersion
Abnormal issues in the process
All measured values meet standards
What is the final step when constructing a control chart?
Draw the chart and note necessary information
Calculate the standard deviation
Sum the values
Check values outside control limits
When should a fishbone diagram (Ishikawa diagram) be used?
When determining data dispersion
When identifying the cause of a problem
When monitoring defect frequency
When controlling production costs
What is the main objective of a control sheet?
Check the standard deviation of products
Classify defects by severity
Collect and store data on product defects
Measure data dispersion
Which chart helps evaluate whether a process adheres to control limits?
Causal diagram
Pareto chart
Control chart
Density distribution chart
What is the first step in creating a scatter plot?
Collect pairs of data for two variables
Calculate the correlation coefficient
Plot points on the chart
Determine the average value of the data
What does the density distribution chart (Histogram) help to identify?
Cause of the problem
Data distribution by frequency classes
Production cost
Relationship between two variables
Correlation coefficient
What does a density distribution chart (Histogram) help identify?
Cause of the problem
Distribution of data across frequency classes
Production cost
Relationship between two variables
What does the correlation coefficient in a scatter plot signify?
Assessing the stability of the process
Determining production costs
Showing the degree of dependence between two variables
Classifying data by frequency
In the Ishikawa diagram, what is the factor 'Human' considered?
Minor cause
Main cause
Result
Solution
When is the Pareto chart typically applied?
When analyzing the relationship between two variables
When focusing on the most important causes
When assessing the stability of the process
When measuring the degree of variation in data
What process does a flowchart assist with?
Controlling product quality
Evaluating error frequency
Analyzing work processes
Enhancing product stability
What does it indicate when a control chart has points outside the limits?
Stable process
Process with issues that need resolution
Absolute stability of the process
No changes in the process
In quality management, which of the following is a primary goal of control charts?
Monitoring production costs
Reducing production time
Identifying when to adjust the process
Increasing product inspection frequency
What does a scatter diagram help analyze?
Stability of a process
Error rate in production
Relationship between two variables
Production cost
What is the significance of the 'bimodal' shape in a density distribution chart?
All products meet standards
Data from multiple processes are mixed
None
What does the shape 'two peaks' in a density distribution chart signify?
All products meet standards
Data from multiple processes are mixed
There are no defective products
The production process is stable
When analyzing an Ishikawa diagram, which step is crucial to identify the root cause of the problem?
List all possible causes
Calculate the frequency of errors
Draw a scatter plot
Identify important data pairs
In a control chart, when all points are within control limits but show a trend of increasing or decreasing, what does this indicate?
Stable process
Unstable process
There is a trend in the process
Product does not meet requirements
What is the purpose of using a density distribution chart?
Identify relationships between variables
Analyze the frequency of errors
Monitor the distribution of product parameters
Identify the causes of a problem
What is the first step in building an Ishikawa diagram?
Identify the problem to be solved
Determine the average value of the data
Collect data
Check the production process
From what percentage of main causes do most product defects typically arise in a Pareto chart?
90%
70%
80%
20%
What is the data collected from control sheets typically used for?
Calculate production costs
Analyze the severity of errors
Input into other analytical tools like Pareto charts
Increase the frequency of product checks
What is one of the benefits of a Pareto chart?
Check the stability of the production process
Increase the frequency of product checks
Focus on important factors for improvement
Ensure quality control
What is one of the benefits of the Pareto chart?
Check the stability of the production process
Increase the frequency of product checks
Focus on important factors for improvement
Ensure all products meet standards
What is the purpose of a control chart with upper and lower limits?
Determine the frequency of product defects
Ensure products meet quality standards
Evaluate the stability of the process
Monitor the dispersion of data
When constructing a scatter plot, how many data pairs should be analyzed at least?
10
20
30
40
What does the Ishikawa diagram help to identify in a production process?
The relationship between two variables
The causes of quality issues
The frequency of product defects
The rate of compliant products
In quality management, what is the English name for the control chart?
Pareto chart
Control chart
Cause-and-effect diagram
Scatter plot
Which chart is used to identify trends and patterns in data over time?
Control chart
Pareto chart
Density distribution chart
Control sheet
What is one of the main characteristics of quality?
Quality is always fixed
Quality does not change over time
Quality is always variable
Quality does not depend on customer demand
What type of information does a control sheet help to store?
Frequency and type of errors occurring
Production costs of each product
Dispersion frequency of data
Relationship between costs and profits
In a flowchart, what does a diamond shape represent?
Start or end of a process
Execution step
Decision point
Transition between steps
In a flowchart, what does a diamond shape represent?
Start or end of a process
Step to be performed
Decision point
Transition between steps
Which chart uses vertical bars to show the frequency of each type of error?
Control chart
Pareto chart
Scatter plot
Ishikawa chart
When all points in a control chart are within control limits, what does this indicate?
The process is completely stable
The process needs to be rechecked
Errors are increasing
The process is not meeting requirements
Flowcharts often help clarify what in the production process?
The relationship between causes of errors
Each step of the process
The frequency of each product error
The distribution of data across frequency layers
What does the 'peak' shape of a density distribution chart signify?
The process is completely stable
There is mixing from multiple different processes
All data is within control limits
There is no difference between measured values
What is the most important step when analyzing an Ishikawa chart?
Identify all potential causes
Draw a control chart
Measure the degree of process variation
Calculate the frequency of product errors
