摘要:

Since the ability to make correct sensory judgments can vary substantially from person to person, it is important in the training and selection of inspectors to be able to distinguish among inspectors of differing sensory abilities. A probabilistic procedure was recently suggested for classifying inspectors as“qualified”or“unqualified.”Besides assuming that only two classes of inspectors exist, this procedure assumes that all inspectors within a class have the same sensory abilities. The purpose of the present paper is to extend this classification scheme by relaxing both of these assumptions so as to better account for the variation in inspection error between and within inspector classes.

ISSN:0022-4065    

DOI:10.1080/00224065.1986.11978991

出版商:Taylor&Francis    

年代:1986

数据来源: Taylor

摘要:

The effect of measurement error on the power of a control chart is examined for the case where both the process average and variance can change. Expressions for the power of theX̄andRcharts are derived. It is shown that if the measurement error is relatively large in comparison to the inherent process error, then the power of theX̄-Rchart is reduced and the sample size should be increased to recover the lost power. The sample size needed to obtain a desired power level can be calculated.

ISSN:0022-4065    

DOI:10.1080/00224065.1986.11978992

出版商:Taylor&Francis    

年代:1986

数据来源: Taylor

摘要:

Distribution-free one-sided prediction limits are derived forpadditional samples based on a preliminary sample. The probability of allpadditional samples meeting a criterion determined from the results of a preliminary sample is expressed in terms of the multivariate hypergeometric distribution function.

ISSN:0022-4065    

DOI:10.1080/00224065.1986.11978993

出版商:Taylor&Francis    

年代:1986

数据来源: Taylor

摘要:

Recent methods of designing CUSUM quality control charts are reviewed. It is shown that the statistical performance of control procedures obtained using economic models is often unsatisfactory.

ISSN:0022-4065    

DOI:10.1080/00224065.1986.11978994

出版商:Taylor&Francis    

年代:1986

数据来源: Taylor

摘要:

A subset selection rule is considered for selecting the best ofkbinomial populations (as determined by the binomial probability parameter). LetXidenote the number of conforming items in a sample of sizenfrom theithpopulation (success probabilitypi),i= 1,…,k.The rule selects theithpopulation if and only if, where d is a nonnegative integer. Operating characteristics are studied for slippage and equi-spaced parametric configurations. Tables and graphs relating to selection probabilities and expected subset size are presented as well as examples for illustrating their use. Also, a new rule is discussed for selecting populations when bounds on the probability parameters are available.

ISSN:0022-4065    

DOI:10.1080/00224065.1986.11978995

出版商:Taylor&Francis    

年代:1986

数据来源: Taylor

摘要:

This paper, the second in a series, utilizes the basic distributions established in the first paper to assess the effect of inspection errors in three types of acceptance procedures: double sampling, link sampling, and partial link sampling.

ISSN:0022-4065    

DOI:10.1080/00224065.1986.11978996

出版商:Taylor&Francis    

年代:1986

数据来源: Taylor

ISSN:0022-4065    

DOI:10.1080/00224065.1986.11978997

出版商:Taylor&Francis    

年代:1986

数据来源: Taylor

ISSN:0022-4065    

DOI:10.1080/00224065.1986.11978998

出版商:Taylor&Francis    

年代:1986

数据来源: Taylor

ISSN:0022-4065    

DOI:10.1080/00224065.1986.11978999

出版商:Taylor&Francis    

年代:1986

数据来源: Taylor

ISSN:0022-4065    

DOI:10.1080/00224065.1986.11979000

出版商:Taylor&Francis    

年代:1986

数据来源: Taylor