7 Basic Tools of Quality
Scatter Diagram
Graphs pairs of numerical data , one per axis, to look for relationships
Control Chart
Graphs used to study how a process changes over time
Check Sheet
Structured, prepared form for collectig and analyzing data
Histogram
Most commonly used graph for showing frequency distributions
Pareto Chart
Shows on a bar graph which factors are more significant
5 Why's
The basis of Toyota's Scientific Approach / "To get to the root cause of an issue, one must ask themselves why 5 times and in doing so, the problem unmasks itself" - Taiichi Ohno
Flow Chart
Visual representation of a process
Kaoru Ishikawa
developed seven basic visual tools of quality so that an average person could analyze and interpret data
Ishikawa (Fishbone Diagram)
identifies many possible causes for a problem in the process by identifying the problem occurring and brainstorming underlying issues for the root cause