Scatter Diagram: When to use it

The Quality Toolbook > Scatter Diagram > When to use it

When to use it | How to understand it | Example | How to do it | Practical variations

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When to use it

• Use it when it is suspected that the variation of two items is connected in some way, to show any actual correlation between the two.
• Use it when it is suspected that one item may be causing another, to build evidence for the connection between the two.
• Use it only when both items being measured can be measured together, in pairs.

Fig. 1. Using the String Diagram in problem solving

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