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Control Charts fall into two main types: variable and attribute.
Variable (i.e., measured)
Variable type control charts use measured data (time, money, length,
width, depth, weight, etc.).
When looking at data, variable measurements often have one or more decimal
places (e.g., 74.05).
The most common type of variable control charts are X charts:
Less common types of variable control charts include:
Attribute (i.e., counted)
Attribute type control charts use counted data (number of defects, mistakes,
errors, injuries, etc.)
When looking at data, attribute data is always an integer (e.g., 1, 3,
5).
Common attribute type control charts include:
Other attribute control charts include:
All of these variable and attribute control charts can be created using
the QI Macros for Excel.
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the FREE 30-day Evaluation copy of the QI Macros Excel SPC Software for Six Sigma
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