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How to implement Statistical Process Control

Life Qi

In this article we’re going to take a look at how you might implement Statistical Process Control (SPC), and how you can use this methodology within your Quality Improvement (QI) projects.

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Walter A. Shewhart: The father of Statistical Process Control

Life Qi

Walter Shewhart (1891 - 1967), known by all as the 'father of statistical process control', became famous, not only for being the master of Deming, but especially for his contributions in the field of statistics and for having developed the theory of common and special causes of variations.

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What are control limits in an SPC chart?

Life Qi

We’ve had a really good look at Statistical Process Control (SPC) in this series of blogs – and we’ve also dived into SPC or control charts in some detail. In this blog we’re going to look specifically at the control limits that are used within SPC charts.

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Run chart vs Control chart

Life Qi

In this series of articles, we have been focusing on Statistical Process Control methodology. We’ve also had a look at control or SPC charts – a really useful way of plotting and measuring data. However, there are other charts you can use - such as run charts - in your Quality Improvement (QI) project.

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How the centre line and control limits are calculated in Life QI

Life Qi

As discussed in our series of articles about SPC charts , Statistical Process Control is a tool used for monitoring and enhancing a process's quality and consistency by plotting data over time on a chart. These limits show whether the process is stable or out of control and are based on the process' inherent fluctuation.

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Common cause and special cause variation

Life Qi

In past articles in this series of blogs, we have looked at Statistical Process Control (SPC) and how it works within the Quality Improvement (QI) setting. We know that SPC charts are designed to measure how a process or system changes over time.

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Interpreting an SPC chart

Life Qi

In this series of blogs we’re going to take a closer look at Statistical Process Control or SPC – something that you may well have encountered in your Quality Improvement (QI) journey thus far. In this article we are going to drill down into SPC or control charts and how you might go about interpreting them.