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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....

Open Access

Probing Probabilities

by Hooper, William

Let's do a little experiment from an article published in the New England Journal of Medicine in 1978. Suppose you are tested for a rare disease that occurs in the population at about 1%. The test is 95% accurate....

Statistics Roundtable: Improve Your Evaluations

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

In an earlier Statistics Roundtable column, we described how the conclusions you can draw from statistical analysis of limited life data can be bolstered by appropriately incorporating engineering knowledge and experience into the analysis....

Statistics Roundtable: Knowing There Are Unknowns

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

DO THE ITEMS that people carry in their pockets or purses make them more likely to develop cancer? In an epidemiological study on the development of lung cancer in the population, is carrying matches an important variable?...

Quality Glossary

by Nelsen, Dave

Five years after it published its first glossary of quality terms, ASQ has revised that glossary with updated definitions and new entries, many from the lean glossary published in 2005. This reference of terms, acronyms, and prominent figures in the...

Metrics for uncertainty.

by Hunter, J. Stuart

A look at probability, evidence and a seldom used additive metric

Note that a bad item provides negative evidence for H. Let's agree 72 I Q U A L I T Y P R O G R E S S I D E C E M B E R 2 0 0 0 Metrics for Uncertainty A look at probability, evidence and a seldom used additive metric by J. Stuart Hunter Statistics Round...

Another Look at "A Graphical Exploration of SPC"

by Hoyer, Robert W.; Ellis, Wayne C.

The authors of "A Graphical Exploration of SPC" (May and June 1996 issues of Quality Progress) comment on readers' letters about their two-part article. Among the responses by Hoyer and Ellis are the following. Their examples using the normal...

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