Sample size determination for p-charts
作者:
Douglas G. Bonett,
期刊:
Journal of Applied Statistics
(Taylor Available online 1993)
卷期:
Volume 20,
issue 3
页码: 375-379
ISSN:0266-4763
年代: 1993
DOI:10.1080/02664769300000037
出版商: Carfax Publishing Company
数据来源: Taylor
摘要:
Two types of decision errors can be made when using a quality control chart for non-conforming units (p-chart). A Type I error occurs when the process is not out of control but a search for an assignable cause is performed unnecessarily. A Type II error occurs when the process is out of control but a search for an assignable cause is not performed. The probability of a Type I error is under direct control of the decision-maker while the probability of a Type II error depends, in part, on the sample size. A simple sample size formula is presented for determining the required sample size for a p-chart with specified probabilities of Type I and Type II errors.
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