Control Chart Suggestion

c-Chart

Control Chart Description

Control charts dealing with the number of defects or nonconformities are called c charts (for count). There is a difference between a defect and defective, as there is between a nonconformity and nonconforming unit. The c-chart control chart is used with discrete/attribute defect data when c-Bar is greater than 5.

Control Chart Formulae

Control Chart Example

Additional Resources

• Counts Control Charts
• Steps in Constructing a c-Chart
• Additional Control Chart Links

References

Wheeler, D.J., & Chambers, D.S. (1992). Understanding Statistical Process Control. Knoxville, TN: SPC Press.