7 Basic Quality Tools

Question 1

Graph used to study how a process changes over time. Comparing current data to historical control limits leads to conclusions about whether the process variation is consistent (in control) or is unpredictable (out of control, affected by special causes of variation)

Answer 1

Control Chart

Question 2

The most commonly used graph for showing frequency of distributions, or how often each different value in a set of data occurs.

Answer 2

Histogram

Question 3

Structured, prepared form for collecting and analyzing data; a generic tool that can be adapted for a wide variety of purposes.

Answer 3

Check Sheet

Question 4

Graphic tool used to trace the flow & sequence of various operations of a process or event (some lists replace this with Stratification diagram or Run chart)

Answer 4

Flowchart

Question 5

A bar graph that shows which factors are more significant

Answer 5

Pareto Chart

Question 6

Graphs pairs of numerical data, one variable on each axis, to look for a relationship

Answer 6

Scatter diagram

Question 7

Identifies many possible causes for an effect or problem and sorts ideas into useful categories.

Answer 7

Cause and Effect Diagram