7 Quality Control (QC) Tools Old and New (PowerPoint PPTX)

The 7 Quality Control (QC) Tools Presentation contain various tools , which originated in Japan, were primarily used for "Shop Floor" (factory) Quality improvements by workmen formed empowered groups, called Quality Circles.

This presentation covering the following topics:

1. Check Sheets – To collected data in a structured manner.
2. Cause and Effect Diagram – To organize probable causes (used along with 5 Why technique).
3. Scatter Diagram – To visually display cause / effect relationship with data (correlation).
4. Pareto – Helps prioritize the key problems (based on problem/defect categories, in the Define phase) or Key Causes (out of a list of causes, in the Analyze phase).
5. Histogram – To visually present distribution of data (displays process variation and can be compared with specification limits).
6. Control Chart – To monitor process performance through time (can be used before and/or after an improvement project) and highlight "out of control" situations needing action.
7. Stratification – Segment / segregate data based on input sources that may be contrbuting to it (for eg., vendor wise, equipment wise, team wise, etc.).

New 7 QC Tools, which are:

1. Affinity Diagram: organizes a large number of ideas into their natural relationships.
2. Relations Diagram: shows cause-and-effect relationships and helps analyze links between different aspects of a complex situation.
3. Tree Diagram: Breaks down broad categories into lower level detail, helping to get the thinking much more specific
4. Matrix Diagram: Helps to show relationship between multiple groups of information including strength of relationship.
5. Matrix Data Analysis: Technique for analyzing and prioritizing select options among many available defined criteria to arrive at prioritization.
6. Arrow diagram: A Project Planning tool (a la PERT/CPM)
7. Process Decision Program Chart (PDPC): To identify potential deviations w.r.t to identified plans.