Statistics Features

Davis Balestracci's picture
Davis Balestracci
According to Mark Graham Brown, from his book Keeping Score (Productivity Press, 2006), 50 percent of the time leaders spend in meetings involving data is waste, 80 percent of the pounds of...
Donald J. Wheeler's picture
Donald J. Wheeler
The average and range chart handles most situations where the data can be logically organized into homogeneous subgroups. However, this chart breaks down when faced with a hierarchical data...
Bruno Scibilia's picture
Bruno Scibilia
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. Designed...
Davis Balestracci's picture
Davis Balestracci
Just curious: Do you have monthly (and/or quarterly and/or even weekly) “How’re we doin’?” meetings like the end-of-year scenario described in my November and December columns last year—about...
Eston Martz's picture
Eston Martz
The language of statistics is a funny thing, but there usually isn’t much to laugh at in the consequences that can follow when misunderstandings occur between statisticians and nonstatisticians. We...
Catherine Beare's picture
Catherine Beare
Sponsored Content Although efforts have been made to create policies that support a bias-free workplace, there is still a considerable way to go toward achieving the gender equality that...
Donald J. Wheeler's picture
Donald J. Wheeler
Good measurements are like apple pie and motherhood. Who could ever be against having good measurements? Since we all want good measurements, it sounds reasonable when people are told to check out...
Quality Transformation With David Schwinn's picture
Quality Transformation With David Schwinn
I recently presented “Statistical Thinking for OD Professionals” for the Organization Development Network annual conference. It was well received, but more important, it reignited in me a passion...
Davis Balestracci's picture
Davis Balestracci
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...
Eston Martz's picture
Eston Martz
A member of Minitab’s LinkedIn group asked how to create a chart to monitor change by month, specifically comparing last year’s data to this year’s data. My last post showed how to do...
Donald J. Wheeler's picture
Donald J. Wheeler
What can be done when a test is destructive? How do we characterize measurement error? How can we determine if a test method is adequate for a given product or application? How can we check for...
Greg Fox's picture
Greg Fox
It’s that time of year again. The time when eggs get nogged, pudding gets figgy, and it becomes socially acceptable to speak in rhyme. So on that note, and with apologies to Clement Clarke...
Davis Balestracci's picture
Davis Balestracci
Those of you familiar with W. Edwards Deming know that his Funnel Experiment ultimately shows that a process in control delivers the best results if left alone. Funnel Rule No. 4, also known as a “...
Barbara A. Cleary's picture
Barbara A. Cleary
Statistics has gotten a bad rap. People love to quote Mark Twain (“There are lies, damn lies, and statistics,” alternatively attributed to Benjamin Disraeli), Vin Scully (“Statistics are used much...
Steve Daum's picture
Steve Daum
Capability analysis is a set of calculations used to assess whether a system is able to meet a set of requirements. Customers, engineers, or managers usually set the requirements, which can be...
Donald J. Wheeler's picture
Donald J. Wheeler
Who can be against apple pie, motherhood, or good measurements? This is why everyone stands up and salutes when we are told to maintain our measurement systems in good calibration. But what is good...
Stanford News Service's picture
Stanford News Service
Most leadership advice is based on anecdotal observation and basic common sense. Stanford Graduate School of Business professor Kathryn Shaw tried a different tack: data-driven analysis. Through...
Davis Balestracci's picture
Davis Balestracci
Have you ever heard something like: “I’m committed to Dr. Deming’s approach [or Six Sigma or lean or TPS, it doesn’t matter], but executives don’t seem to listen anymore. All they do is keep...
Donald J. Wheeler's picture
Donald J. Wheeler
Now we come to the sixth way to use a process behavior chart. Here we are going to look at how one group of workers used their average and range chart to improve their process. Their part had only...
Joby George's picture
Joby George
Having difficulty managing quality and quality-related data? You’re not alone. Many manufacturers struggle with this these issues due to paper-based or other disparate systems being used to track,...