08. SPC – Scattered Diagram
Scattered diagram indicates correlation between independent variable (typically on the x-axis) and dependent variable (also known as a function of x, typically on the y-axis). Scattered diagram is used for the following purposes:
- Identify and verify correlation between independent variable and dependent variable (x versus y).
- Provide both visual and statistical means for the potential relation between x and y.
In general, scattered diagram can have the following 5 types of trend.
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