Seven Basic Tools of Quality
Tree diagram
A form of flow chart. Maps out all possible outcomes. Useful for very complex tasks.
Control Chart
A graph used to study how a process changes over time. One of the "Seven basic tools of quality."
Seven basic tools of quality
1. Cause-and-effect diagram (also known as the "fishbone" or Ishikawa diagram) 2. Check sheet 3. Control chart 4. Histogram 5. Pareto chart 6. Scatter diagram 7. Statistical process control
Pareto Effect
80% of problems originate with 20% of the causes.
Flow Charts
A chart that maps a process. AKA process map. One of the "Seven basic tools of quality."
Pareto Chart
An descending-ordered histogram with a line that represents cumulative total. One of the "Seven basic tools of quality."
Scatter diagram
Childhood frolics graph. One of the "Seven basic tools of quality."
Cause and Effect Diagram
Fishbone or Ishikawa diagram. One of the "Seven basic tools of quality."
Histogram
Graphical distribution of occurrences. One of the "Seven basic tools of quality."
SPC
Statistical process control (run charts, etc.) One of the "Seven basic tools of quality."