Vital Deming Lessons <em>Still</em> Not Learned
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Using charts like these risks treating common cause as special cause.
The Three-Way Chart
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Three-way chart for steel tensile strengths
How Taguchi Designs Differ From Factorial Designs
Genichi Taguchi is famous for his pioneering methods of robust quality engineering. One of the major contributions that he made to quality improvement methods is Taguchi designs.
When the Indicators I Plot Are Common Cause, What Should I Do?
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“How we doin’?”
Don’t We Need Good Measurements?
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You don't need high quality data to create process behavior charts
Statistical Thinking for Everyone
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A lot of statistics, too little understanding
Image: U.S. Department of Agriculture
Resolve to Simplify and Evolve
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Credit: Didier Descouens
In spite of the overwhelming odds against me, every new year I firmly resolve to reignite my relentless passion about creating a critical mass of colleagues committed to practicing improvement as “built-in” to cultural DNA using data sanity.
Creating Charts to Compare Month-to-Month Change
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This I-MR chart displays the data in two distinct phases by year
Credit: Minitab