Control Chart Types

Control Charts fall into two main types: variable and attribute.

Variable (i.e., measured)

Variable 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:

Learn More

Create these charts and diagrams yourself in just seconds using the QI Macros for Excel...
Try It Now!

How We Can Help Download Free QI Macros Trial Buy QI Macros for Excel Now