What Is the Purpose of a Control Chart?

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Dr. Walter Shewhart of Bell Laboratories invented control charts in 1924. Control charts are extremely common in any industry where you need to monitor performance, such as in health care.


Control charts are graphs that display variations in a process chronologically and compare them to a reference point, usually the average result for the process.


A control chart helps determine whether variations in your process are due to defects with the product or extraneous circumstances, such as employee mistakes.



Using a control chart shows the effects of alterations to your process and helps you correct any errors in real time. You can also predict the range of possible future results.



About the Author

Russell Huebsch has written freelance articles covering a range of topics from basketball to politics in print and online publications. He graduated from Baylor University in 2009 with a Bachelor of Arts degree in political science.

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