摘要:

Unemployment statistics in the United States on a comprehensive scale are available only from census data or sample surveys. Since 1940 these have been developed so that there are now available on a current basis, measures of the volume of employment, of the characteristics of the unemployed, and of the total labor force.

ISSN:0162-1459    

DOI:10.1080/01621459.1950.10501141

出版商:Taylor & Francis Group    

年代:1950

数据来源: Taylor

摘要:

Results in the theory of sampling from finite populations can be obtained very easily by working in terms ofk's. The single subscriptk's were introduced by R. A. Fisher [2], while the multiple subscript ones seem to be new. Thek's have very simple general properties as regards sampling from one or more finite populations, and may be easily computed numerically. Applications are made here mostly to known results, while further applications to obtain new results will be made elsewhere.

ISSN:0162-1459    

DOI:10.1080/01621459.1950.10501142

出版商:Taylor & Francis Group    

年代:1950

数据来源: Taylor

摘要:

The spacing and effectiveness functions of a quality control chart used either alone or in sets of two or more are derived for production at a constant level and for erratic production. The spacing of decision points is considered from a general point of view. The theory developed is fundamental in deciding which of two different decision techniques in quality control, each using the same spacing function, is the more effective.

ISSN:0162-1459    

DOI:10.1080/01621459.1950.10501143

出版商:Taylor & Francis Group    

年代:1950

数据来源: Taylor

摘要:

In many practical applications we wish to select one product (commodity, plant variety, technique, etc.) from a set of alternative products. When there are only two products to be considered, this will be called the two-choice selection problem. Several alternative rules are derived for determining sample sizes, i.e., the amount of data on which the selection is to be based.

ISSN:0162-1459    

DOI:10.1080/01621459.1950.10501144

出版商:Taylor & Francis Group    

年代:1950

数据来源: Taylor

摘要:

The theory of games is applied to an advertising competition. Functions of susceptibility and resistance to advertising are used in a mathematical model to determine the strategy and spending rates of the participants in the campaign.

ISSN:0162-1459    

DOI:10.1080/01621459.1950.10501145

出版商:Taylor & Francis Group    

年代:1950

数据来源: Taylor

摘要:

This paper discusses the problems of slope-estimation and of linear extrapolation when the precision of theY-measurements changes with different values ofx.Tables are presented which show, for each of these problems, the optimum placement ofx-values and the optimum distribution of theNobservations for selected relationships between σ andx.The optimum placements are seen to be the same for the two problems, but for the latter, the optimum distributions depend on the nearness or remoteness of the extrapolation.

ISSN:0162-1459    

DOI:10.1080/01621459.1950.10501146

出版商:Taylor & Francis Group    

年代:1950

数据来源: Taylor

摘要:

The purpose of this article is to study a sequential plan for sampling from a finite population which contains a very small proportion defective. A number of working formulae are developed and suggestions offered for their efficient use in practice. The actual operation of the plan is illustrated in a worked example, in which the data and results of several tests are recorded.

ISSN:0162-1459    

DOI:10.1080/01621459.1950.10501147

出版商:Taylor & Francis Group    

年代:1950

数据来源: Taylor

ISSN:0162-1459    

DOI:10.1080/01621459.1950.10501148

出版商:Taylor & Francis Group    

年代:1950

数据来源: Taylor

摘要:

Analysis and Design of Experiments.H. B. Mann(Professor of Mathematics, Ohio State University). New York: Dover Publications, Inc., 1950. Pp. xiv, 195. $2.95.

ISSN:0162-1459    

DOI:10.1080/01621459.1950.10501149

出版商:Taylor & Francis Group    

年代:1950

数据来源: Taylor

ISSN:0162-1459    

DOI:10.1080/01621459.1950.10501150

出版商:Taylor & Francis Group    

年代:1950

数据来源: Taylor