Abstract
In a number of statistical quality control applications, sample ranges are used to estimate the variance and standard deviation of a normally distributed random variable. A brief review and explanation are given of two estimators of variability based on the sample range and a new estimator is proposed. We also discuss the use of moving ranges when subgroups are of size 1 and point out that, in general, using moving ranges of span exceeding 2 is not desirable. We also review a generalization of the moving range useful in multivariate quality control.
| Original language | English (US) |
|---|---|
| Article number | 8918643 |
| Pages (from-to) | 211-217 |
| Number of pages | 7 |
| Journal | Quality Engineering |
| Volume | 13 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 1 2000 |
Keywords
- Gauge R&R studies
- Multivariate quality control
- Unbiased estimators
- Variables acceptance sampling
ASJC Scopus subject areas
- Safety, Risk, Reliability and Quality
- Industrial and Manufacturing Engineering
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