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Why do we need 30 data samples?
Continuous Improvement key to B Corps, Fair Trade and other mission-driven organizations
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How Behavior Change Can Influence Wearing of Masks
How to Summarize Survey Comments and Feedback in Six Sigma

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cause communication diagram effect fishbone lean map mapping networking process quality Six Sigma soft stream team tools value value stream map VSM

Don’t “check the box” with soft improvement tools

January 7, 2010November 11, 2019 bizpi cause, communication, diagram, effect, fishbone, lean, map, mapping, networking, process, quality, Six Sigma, soft, stream, team, tools, value, value stream map, VSM

We recently were reminded of a problem that comes up every so often in regards to process improvement tools. The

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6s 80/20 chart excel lean management pareto presentation quality Six Sigma tools

New spin (literally) on an old quality tool

November 21, 2009November 11, 2019 bizpi 6s, 80/20, chart, excel, lean, management, pareto, presentation, quality, Six Sigma, tools

I love the Pareto chart. It’s one of the simplest quality tools, yet one of the most powerful, and underused

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E25: Why do we need 30 data samples?

by Brion Hurley

I saw a recent question in a forum, asking about the origin of the sample size of 30 data points. I decided to read you the response I gave, and make it a new blog post on my website.

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Article: Why do we need 30 data samples?
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E25: Why do we need 30 data samples?

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E25: Why do we need 30 data samples?

March 6, 2021

Brion Hurley

E24: Top 3 things to validate before removing test or inspection steps

March 3, 2021

Brion Hurley

E23: What is the Lean Communicators network?

February 21, 2021

Brion Hurley

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Recent Posts

Why do we need 30 data samples?
Continuous Improvement key to B Corps, Fair Trade and other mission-driven organizations
What are my options if I took a Six Sigma Green Belt or Black Belt class, but never completed a project for certification?
How Behavior Change Can Influence Wearing of Masks
How to Summarize Survey Comments and Feedback in Six Sigma

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