TQC CE16 - 7 Basic QC Tools

1. Who introduced the 7 Basic QC Tools?

• W. Edwards Deming

• Kaoru Ishikawa

• Vilfredo Pareto

• Frank Gilbreth

Answer explanation

Originally published in 1968 in Japan, Kauro Ishikawa introduced 7QC tools in his article "Guide to Quality Control" – simple, easy to learn, easy to use.

2. What is the main purpose of a check sheet?

• Identify root causes

• Quantify defects by type or location

• Visualize data trends

• Monitor process stability

3. Which tool is also known as a Fishbone Diagram?

• Pareto Chart

• Histogram

• Cause & Effect Diagram

• Scatter Diagram

4. What principle is the Pareto Chart based on?

• 6M Categories

• 5S Implementation

• 80/20 Rule

• Statistical Control Limits

5. Which tool is best for analyzing the relationship between two variables?

• Histogram

• Scatter Diagram

• Control Chart

• Flow Chart

6. In process mapping, what does a diamond symbol represent?

• Start/End

• Process

• Decision

• Document

7. What is a limitation of using histograms?

• Cannot identify root causes

• Used only with continuous data

• Complex to construct

• Does not provide trends

8. Which QC tool is used to detect unwanted changes in a process?

• Check Sheet

• Pareto Chart

• Scatter Diagram

• Control Chart

9. What is the first step in constructing a check sheet?

• Determine what to observe

• Design the form

• Label events

• Record data

10. Which QC tool helps prioritize the most critical issues?

• Histogram

• Scatter Diagram

• Pareto Chart

• Cause & Effect Diagram