How Should the Sample Size be Selected for an X-bar Chart? (Part II)
Measurement System Assessment
By Steven Wachs / February 11, 2021

How Should the Sample Size be Selected for an X-bar Chart? (Part II)

An earlier article focused on the conceptual application of appropriate sample sizes for X-bar charts.  As we discussed, the purpose...

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How Should the Sample Size be Selected for an X-bar Chart? (Part I)
Measurement System Assessment
By Steven Wachs / February 11, 2021

How Should the Sample Size be Selected for an X-bar Chart? (Part I)

The purpose of control charts is to detect significant process changes when they occur. In general, charts that display averages...

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How do I Choose the Appropriate Type of Control Chart
Statistical Process Control/Process Capability
By Steven Wachs / January 27, 2021

How do I Choose the Appropriate Type of Control Chart

Proper control chart selection is critical to realizing the benefits of Statistical Process Control. Many factors should be considered when...

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What is the Relationship between Process Stability and Process Capability?
Statistical Process Control/Process Capability
By Steven Wachs / January 21, 2021

What is the Relationship between Process Stability and Process Capability?

Process Stability and Process Capability are both extremely important aspects of any manufacturing process.  Often the concepts behind process stability...

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How do I Know What Product or Process Characteristics to Control?
Statistical Process Control/Process Capability
By Steven Wachs / January 5, 2021

How do I Know What Product or Process Characteristics to Control?

While the construction of control charts is relatively straight-forward, often a more difficult question is “how do I know what...

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10 Keys for Maximizing the Benefits of your SPC Program
Statistical Process Control/Process Capability
By Steven Wachs / December 29, 2020

10 Keys for Maximizing the Benefits of your SPC Program

Statistical Process Control charts have been called the Voice of the Process. Progressive manufacturers utilize control charts to “listen” to...

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What is the Philosophy of Process Control (Rather than Product Control)?
Statistical Process Control/Process Capability
By Steven Wachs / December 21, 2020

What is the Philosophy of Process Control (Rather than Product Control)?

What is Quality? Ask people involved with the design and manufacture of a product the following question: “What is Quality?”...

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Analyzing the Experiment (Part VI)
Design of Experiments
By Steven Wachs / December 8, 2020

Analyzing the Experiment (Part VI)

In the last Blog, we explored the use of contour plots and other tools (such as a response optimizer) to...

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Analyzing the Experiment (Part V)
Design of Experiments
By Steven Wachs / November 17, 2020

Analyzing the Experiment (Part V)

In the last Blog, we learned how to work with predictive models to find solutions that solve for desired responses. ...

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Analyzing the Experiment (Part IV)
Design of Experiments
By Steven Wachs / November 10, 2020

Analyzing the Experiment (Part IV)

In the last Blog, we learned how to determine the coefficients of a predictive model for 2-level screening designs.It is...

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