Control Chart Tutorials and Examples

Minitab Blog Editor | 9/12/2016

Topics: Control Charts, Quality Improvement

The other day I was talking with a friend about control charts, and I wanted to share an example one of my colleagues wrote on the Minitab Blog.  Looking back through the index for "control charts" reminded me just how much material we've published on this topic.

Whether you're just getting started with control charts, or you're an old hand at statistical process control, you'll find some valuable information and food for thought in our control-chart related posts. 

Different Types of Control Charts

One of the first things you learn in statistics is that when it comes to data, there's no one-size-fits-all approach. To get the most useful and reliable information from your analysis, you need to select the type of method that best suits the type of data you have.

The same is true with control charts. While there are a few charts that are used very frequently, a wide range of options is available, and selecting the right chart can make the difference between actionable information and false (or missed) alarms.

What Control Chart Should I Use?  offers a brief overview of the most common charts and a discussion of how to use the Assistant to help you choose the right one for your situation. And if you're a control chart neophyte and you want more background on why we use them, check out

We extol the virtues of a less commonly used chart in .

In , Dawn Keller discusses the distinction between P' charts and their cousins, described by Tammy Serensits in .

And it's good to remember that things aren't always as complicated as they seem, and sometimes a simple solution can be just as effective as a more complicated approach. See why in

Control Chart Tutorials

Many of our Minitab bloggers have talked about the process of choosing, creating, and interpreting control charts under specific conditions. If you have data that can't be collected in subgroups, you may want to learn about

If you do have data collected in subgroups, you'll want to understand why, when it comes to .

It's often useful to look at control chart data in calendar-based increments, and taking the monthly approach is discussed in the series and .

If you want to see the difference your process improvements have made, check out and

While the basic idea of control charting is very simple, interpreting real-world control charts can be a little tricky. Be sure to check out this post about a great feature in the Assistant:

Finally, one of our expert statistical trainers offers his suggestions about .

Control Chart Examples

Control charts are most frequently used for quality improvement and assurance, but they can be applied to almost any situation that involves variation.

My favorite example of applying the lessons of quality improvement in business to your personal life involves Bill Howell, who applied his Six Sigma expertise to the (successful) management of his diabetes. Find out how he uses .

Some of our bloggers have applied control charts to their personal passions, including holiday candies in and bicycling in .

If you're into sports, see how control charts can reveal Or look to the cosmos to consider . And finally, compulsive readers like myself might be interested to see how relevant control charts are to literature, too, as Cody Steele illustrates in

How are you using control charts?