Definitive Guide to SPC Charts 

Discover the most popular SPC tools and how to use them.

Why Use Control Charts?

For manufacturers who use statistical process control (SPC) or continuous process improvement, SPC control charts are typically the first indication that something can be improved and warrants a root-cause analysis or other process improvement investigation.

What Is a Control Chart?

A Key Tool for Quality Control

Today, control charts are a key tool for quality control and figure prominently in Lean manufacturing and Six Sigma efforts.

The Right Control Chart for Every Situation

Selecting the most appropriate chart for a given situation can be overwhelming. But using a control chart that isn’t sensitive enough for your process can produce false positives.

Plus, unless you also take advantage of additional analytical SPC charts and graphs, you might be missing out on potential insights.
The Right SPC Control Charts for Every Situation

SPC Tools for Greater Analysis

On these pages, you’ll find some basic examples of the most popular SPC control charts and also other analytical charts that can optimize your SPC insights. And you’ll get information about how and when to utilize each chart. 

For even more detailed information, download our free eBook A Practical Guide to Selecting the Right Control Chart.

SPC Chart Tools for Greater Analysis

Beyond the SPC Chart: Modern Tools and SPC Software

Today’s manufacturing environments produce an ever-increasing amount of data. With support for automated and semi-automated data collection, using statistical process control through SPC-based Quality Intelligence software makes sense and can help reduce or eliminate the potential for human error. 

As an added benefit, you no longer need to juggle multiple Excel spreadsheets and programs to achieve detailed analyses and reports. You can more easily mine your data for information that helps you solve production problems in real time—and then gives you added insights. You can also get you visibility into all your processes and use those data to improve processes across the board.


SPC Control Charts

Select an SPC control chart to learn more about its use in traditional and special production situations.

Individual X and Moving Range (IX-MR) Chart

Individual X and Moving Range (IX-MR) Chart

Charts the actual reading and the absolute difference between two consecutive plot points.


Xbar and Range Chart

Xbar and Range Chart

Plots the average of individual values in a subgroup.

Learn more
Xbar and s Chart

Xbar and s Chart

Plots the average and the sample standard deviation of individual values in a subgroup.

Learn more

SPC Analytic Charts

Select an analytic chart to discover how it can provide insight for your SPC initiatives.
Histogram Chart


Plots distributions to provide a quick view of variations with a process.

Learn more

Pareto Chart


Provides a different way to visualize distributions and analyze problem or cause frequency.

Learn more

Box and Whisker Chart


Shows the shape of a distribution, including central value and variability.

Learn more

Capability / Performance Chart

Capability / Performance

Illustrates a process’s ability to meet specifications.

Learn more

Take the first step from quality to excellence