Statistics Spotlight

2014

Statistics Roundtable: Timely Reliability Assessment

by Doganaksoy, Necip; Hahn, Gerald J.; Meeker, William Q.

Often, we must demonstrate long-term product or component reliability within a relatively short time window. For example, it is not uncommon to need to assess 10-year reliability from a six-month duration test program....


Statistics Roundtable: Divide and Conquer

by Anderson-Cook, Christine M.; Lu, Lu

In his best-selling book, Malcolm Gladwell presents examples in which benefits for many desirable attributes don’t follow the assumed ever-increasing pattern, but rather can be described by an “inverted U-shaped curve.”...


Statitistics Roundtable: The Folly Youth

by Borror, Connie M.

When I began analyzing data for various companies and researchers a long time ago, I learned an extremely valuable lesson: When given data, be sure to ask lots of questions about it before any analysis....


Statistics Roundtable: What's Meant by 'Capability'?

by Hare, Lynne B.

Time and again, you hear the question: “Is this process capable?” “Of what?” I want to ask. It hasn’t learned any new moves since the Macarena, so I’m not sure. Very funny. But we really need to know whether it can produce product within specification....


Statistics Roundtable: Don’t Be Discrete

by Seaman, Julia E.; Allen, I. Elaine

When planning an analysis, the type and quality of data will have the biggest impact on the robustness and validity of the results....


Statistics Roundtable: Solving Jigsaw Puzzles

by DiBenedetto, Alexa; Hoerl, Roger W.; and Snee, Ronald D.

We all face problems in business, as well as in our personal lives and relationships. Despite the need for effective ways to address problems, there is surprisingly little agreement in quality or scientific literature on approaching problems in general....


Statistics Roundtable: The Quality Practitioner’s Friend

by Borror, Connie M.

On Aug. 28, 2013, the quality and statistics communities lost one of their biggest champions: Lloyd S. Nelson. Nelson was an honorary member of ASQ, the founding editor of the Journal of Quality Technology and wrote the Technical Aids column for JQT....


Statistics Roundtable: Unraveling Bayes’ Theorem

by Anderson-Cook, Christine M.

Many of us have a love-hate relationship with conditional probabilities. Yet they are a function of our daily lives. We update our knowledge with new information, and what we believe evolves as new information gets integrated into our thought processes....


Statistics Roundtable: Listening to Sentiment

by Seaman, Julia E.; Allen, I. Elaine

What do you do if you just bought a new computer and it now makes some weird clicking sounds? Or if the airline lost your luggage, but representatives refuse to help recover it or provide compensation?...


Statistics Roundtable: Assessing Analytical Equipment Accuracy

by Hare, Lynne B.

Much ink and training time have been devoted to measurement systems analysis (MSA)—the adopted child of Six Sigma—and other statistical training programs that continue to add great value through improvements in quality and productivity....



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