Library
Newsletter Archive - full copies of past Division newsletters
Statistics Body of Knowledge - our library content below focuses on the topics in this listing.
A Case Study in Sample Size
Statisticians are often asked questions related to sample size. However, they are often not well prepared to answer them. There are simple approximate sample-size formulas for such as two-sample t tests, and those can be pressed into service. But most studies are more complicated than that. In fact, often several effects come into play, and thus there are several aspects of the power/sample-size question. This article presents an example of a sample-size problem in a semiconductor experiment having a somewhat complex design. It is hoped that it helps to give some practical guidance in this confusing area.
- Filetype: pdf
- Publish date: 2014-03
- Keywords:Sample Size, Semiconductor experiments, Split-lot designs
Sampling for Process Audits
2010 Institute for Continual Quality Improvement Presentation
The presentation describes the author’s approach for applying sampling inspection to process audits...
- Filetype: mp4
- Publish date: 2011-03
- Keywords:
Model Selection (Part I: Model Selection Criteria)
Mini Paper Appearing in Winter 2011 Newsletter
Model selection is the process of choosing terms for a statistical model that adequately describes or accurately predicts the system under observation...
- Filetype: pdf
- Publish date: 2011-01
- Keywords:model selection, R-squared, Mallow's Cp, AIC, BIC
A Primer on Surveys
Mini-Paper appearing in the Winter 2000 Newsletter
This article discusses considerations in question wording, answer choices, comparisons between surveys, and piloting (or validating) a questionnaire prior to its full-scale exe!..
- Filetype: pdf
- Publish date: 2000-01
- Keywords:Communication, Random sampling, Rating scales, Representative sampling, Stratified sampling, Surveys
Resampling: Transforming Statistics
Basic Tools Appearing in Winter 1994 Newsletter
This article demonstrates the applications and advantages of resampling, a computationally rich but minimal assumption method for solving statistical problems requiring probabilistic analysis...
- Filetype: pdf
- Publish date: 1994-01
- Keywords:Resampling, Hypothesis Testing, Normal distribution
Measurement Systems Analysis - Revisited
Basic Tools Taken from the Summer 1993 Newsletter
This paper summarizes a collection of methods to study the stability and variability of measurement systems...
- Filetype: pdf
- Publish date: 1993-06
- Keywords:Measurement system analysis, Metrology, Gage repeatability and reproducibility (Gage R&R, Gauge R&R), PDSA (plan-do-study-act) cycle, Individuals and moving range (X, mR) chart, Linear regression, sources of variation
‘Stop Light’ Control - Revisited
Mini Paper Taken from the Summer 1991 Newsletter
This paper presents ‘stop light’ control...
- Filetype: pdf
- Publish date: 1991-06
- Keywords:Statistical process control, Control charts, Stop light control, Sampling, Double Sampling, Binomial distribution, Poisson distribution, False alarms