1. What type of control chart pattern is characterized by consistent fluctuations around the centerline?
a) Natural
b) Level-shift
c) Cycle
d) Wild
Answer: a) Natural
Explanation: Natural control chart patterns exhibit consistent fluctuations around the centerline without any specific trends or shifts, indicating a stable process with random variations.
2. Which type of disturbance occurs sporadically and does not follow a consistent pattern in a process?
a) Periodic
b) Persistent
c) Natural
d) Wild
Answer: d) Wild
Explanation: Wild disturbances occur sporadically and do not follow any consistent pattern in a process. They are unpredictable and may require immediate attention to identify their cause and rectify them.
3. In a control chart, if there is a sudden and sustained shift in the process mean, what pattern is being observed?
a) Natural
b) Level-shift
c) Cycle
d) Wild
Answer: b) Level-shift
Explanation: A level-shift pattern in a control chart indicates a sudden and sustained shift in the process mean, signaling a change in the process behavior that needs to be investigated and addressed.
4. Which type of control chart pattern is characterized by repeated fluctuations at regular intervals?
a) Natural
b) Level-shift
c) Cycle
d) Wild
Answer: c) Cycle
Explanation: Cycle patterns in a control chart exhibit repeated fluctuations at regular intervals, suggesting the presence of periodic variations in the process that need to be understood and managed.
5. What type of diagram is commonly used for brainstorming to identify potential causes of a problem?
a) Ishikawa
b) Interrelationship
c) Systematic
d) Matrix
Answer: a) Ishikawa
Explanation: Ishikawa diagrams, also known as fishbone diagrams, are commonly used for brainstorming sessions to identify potential causes of a problem by categorizing them into major contributing factors.
6. Which diagram emphasizes the interdependencies between various factors influencing a process?
a) Ishikawa
b) Interrelationship
c) Systematic
d) Matrix
Answer: b) Interrelationship
Explanation: Interrelationship diagrams emphasize the interdependencies between various factors influencing a process, helping to understand the complex relationships among different variables.
7. Which type of diagram is used to visually represent the step-by-step sequence of a process?
a) Ishikawa
b) Interrelationship
c) Systematic
d) Matrix
Answer: c) Systematic
Explanation: Systematic diagrams are used to visually represent the step-by-step sequence of a process, allowing for a clear understanding of the workflow and identifying areas for improvement or optimization.
8. What concept focuses on making incremental changes to continuously improve a process?
a) Cause-effect
b) Change concepts
c) Waste elimination
d) Matrix diagrams
Answer: b) Change concepts
Explanation: Change concepts focus on making incremental changes to continuously improve a process, often through methods such as Kaizen or continuous improvement initiatives.
9. In process improvement, what method aims to identify and eliminate non-value adding activities?
a) Cause-effect
b) Change concepts
c) Waste elimination
d) Matrix diagrams
Answer: c) Waste elimination
Explanation: Waste elimination aims to identify and eliminate non-value adding activities or processes within a system, thereby improving efficiency and reducing costs.
10. Which type of chart pattern indicates the presence of multiple sources of variation affecting the process?
a) Multi-universe
b) Level-shift
c) Natural
d) Wild
Answer: a) Multi-universe
Explanation: A multi-universe pattern in a control chart indicates the presence of multiple sources of variation affecting the process, requiring careful analysis to identify and address each contributing factor.