Six Features

Harish Jose's picture
Harish Jose
It has been a while since I have written about statistics, and I get asked a lot about a way to calculate sample sizes based on reliability and confidence levels. So today I am sharing a spreadsheet...
Frances Brunelle's picture
Frances Brunelle
Just as baby boomers on the manufacturing plant floor are getting ready to retire, so are the owners. More than 5,000 small manufacturing operations (with annual revenues between $2 and $20 million)...
Donald J. Wheeler's picture
Donald J. Wheeler
In the past two months we have looked at how three-sigma limits work with skewed data. This column finds the power functions for the probability limits of phase two charts with skewed probability...
Anthony D. Burns's picture
Anthony D. Burns
You’ve set aside Sunday afternoon to bake some cookies, but you discover you have run out of eggs. Your partner in marital bliss has gone out and taken the car. You call a couple of mates, and they...
Harish Jose's picture
Harish Jose
Today I’m looking at design from a cybernetics viewpoint. My inspirations come from cybernetics and design theorists Ross Ashby, Stafford Beer, Klaus Krippendorff, Paul Pangaro, and Ranulph Glanville...
Harish Jose's picture
Harish Jose
One of my favorite equations from Factory Physics, by Wallace Hopp and Mark Spearman (Waveland Press, third edition, 2011) is Kingman’s formula, usually represented as “VUT.” The VUT equation...
Steve Moore's picture
Steve Moore
Pickleball is arguably the fastest-growing sport in the United States, especially among baby-boomer retirees. This game is similar to tennis, but is played on a smaller court (44 ft × 20 ft) with a...
Harish Jose's picture
Harish Jose
After reviewing Mark Graban’s wonderful book, Measures of Success (Constancy, 2018), I started rereading Walter Shewhart’s books, Statistical Method From the Viewpoint of Quality Control (...
Jody Muelaner's picture
Jody Muelaner
In a general sense, capability is the ability to do something. Within manufacturing, capability is given a much more specific definition. It is an expression of the accuracy of a process or equipment...
Rohit Mathur's picture
Rohit Mathur
Whatever the process or type of data collected, all data display variation. This is also true in software development. Any measure or parameter of interest to our business will vary from time period...
Scott A. Hindle's picture
Scott A. Hindle
In everyday language, “in control” and “under control” are synonymous with “in specification.” Requirements have been met. Things are OK. No trouble. “Out of control,” on the other hand, is...
Brian Lagas's picture
Brian Lagas
‘Why are our changeovers taking so long?” If you’ve asked this question on the shop floor, more than likely you were met with blank stares by your employees. Open-ended questions like this are...
Chad Kymal's picture
Chad Kymal
During the early 1980s, GM, Ford, and Chrysler established the Automotive Industry Action Group (AIAG), a not-for-profit organization with the mission “To improve its members’ competitiveness through...
Harish Jose's picture
Harish Jose
I must confess up front that the title of this column is misleading. Similar to the Spoon Boy in the movie, The Matrix, I will say, “There is no lean problem or a Six Sigma problem. All...
Ryan E. Day's picture
Ryan E. Day
Current business conversation often focuses on data and big data. Data are the raw information from which statistics are created and provide an interpretation and summary of data. Statistics make it...
Nicola Olivetti's picture
Nicola Olivetti
According to a report by PwC, industrial sectors worldwide plan to invest $900 billion in Industry 4.0 each year. Despite these growing technology investments, only a few technologies are...
Shobhendu Prabhakar's picture
Shobhendu Prabhakar
Someone recently asked me why quality failures and safety incidents continue to occur despite organizations communicating their quality and safety visions to the workforce, developing and...
Harish Jose's picture
Harish Jose
Today I’m looking at Factory Physics and the Toyota Production System (TPS). My main references for the post are the 1977 paper co-authored by ex-Toyota president Fujio Cho and key ideas from Factory...
Doug Devereaux's picture
Doug Devereaux
Artificial intelligence (AI) is widely acknowledged as a crucial aspect of what is broadly referred to as Industry 4.0. Although no one knows yet how AI will be incorporated into the next phase of...
Shobhendu Prabhakar's picture
Shobhendu Prabhakar
Historically, conventional wisdom among business managers was that the higher the quality, the higher the cost. This perception still holds true today among a few business managers. Common sense also...