The 7 QC Tools (Seven Quality Control Tools) are a fixed set of graphical techniques identified as being most helpful in troubleshooting issues related to quality. They are: 1. Cause-and-Effect Diagram (also known as Ishikawa or Fishbone Diagram): Identifies potential causes of a problem. 2. Check Sheet: A structured form for collecting and analyzing data. 3. Control Chart: Used to monitor the stability of a process. 4. Histogram: Shows the distribution of data. 5. Pareto Chart: Identifies the most significant factors contributing to a problem. 6. Scatter Diagram: Examines the relationship between two variables. 7. Stratification (Flow Chart or Run Chart): Separates data into categories to identify patterns. These tools are widely used in quality management and process improvement to analyze, understand, and solve problems.
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