摘要:

SummaryInaugural address by Professor J. W. Sieben at the Technical University, Delft. The subject is the use of statistical arguments in designing experiments.

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1962.tb01181.x

出版商:Blackwell Publishing Ltd    

年代:1962

数据来源: WILEY

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1962.tb01182.x

出版商:Blackwell Publishing Ltd    

年代:1962

数据来源: WILEY

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1962.tb01183.x

出版商:Blackwell Publishing Ltd    

年代:1962

数据来源: WILEY

摘要:

SummaryThe sums of squares associated with the independent variables in a multiple regression equation depend on the order in which these variables are introduced. Two methods have been proposed in the literature to avoid this inconvenience: “forward selection” or “backward elimination”.With forward selection the independent variables are introduced in successive stages. The order is not predetermined but at each stage that variable is taken as the next one which produces the highest reduction in the residual sum of squares of the dependent variable.With backward elimination on the other hand, we start with the complete regression equation and eliminate the independent variables from it in the order in which they produce the smallest increases in the residual sum of squares.This paper describes a simple and convenient computational lay‐out which can be used for both procedures. In forward selection we start with the matrix of product sums, and in bacward elimination we work from the inverse matrix.In addition these techniques are applied to a variety of practical examples in order to see what results they lead to and what pitfalls may be en

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1962.tb01184.x

出版商:Blackwell Publishing Ltd    

年代:1962

数据来源: WILEY

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1962.tb01185.x

出版商:Blackwell Publishing Ltd    

年代:1962

数据来源: WILEY

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1962.tb01186.x

出版商:Blackwell Publishing Ltd    

年代:1962

数据来源: WILEY

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1962.tb01187.x

出版商:Blackwell Publishing Ltd    

年代:1962

数据来源: WILEY

摘要:

SummaryIn this paper a system of cost‐controlled production planning is described. This system considers all kinds of costs associated with a production in phases (e.g. production of units, production of subassemblies, assembly) which may be affected by the planning, such as set‐up costs, costs of transport, control, inventories, capacity and changes in capacity.The mathematical model leads to a linear or mixed discrete‐linear programming problem whose solution gives for each time period considered the size of the capacities which should be used and of the series of different products which should be produced. Practical recommendations are given for obtaining a sufficiently satisfying sol

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1962.tb01188.x

出版商:Blackwell Publishing Ltd    

年代:1962

数据来源: WILEY

摘要:

SummaryIn studies of inventory control problems in industry it is often supposed that there is a variable demand and a constant delivery time.This assumption is rarely tenable. In this paper rules are developed for determining the reorder level when the demand has a gamma distribution and the delivery time is normally distributed.

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1962.tb01189.x

出版商:Blackwell Publishing Ltd    

年代:1962

数据来源: WILEY

摘要:

Book reviewed in this article:Introduction to Probability and Statistics, Henry L. A1der and Edward B. RoessierModern Probability Theory and Its Applications, Emanuel ParzenIntroduction to Probability and Random Variables, G. P. Wadsworth and J. G. BryanElements of statistical inference, R. M. KozelkaMeasurement: delinitions and theories, C. West Church man and Phi1burn RatooshRegression Analysis, E. J. Wi11iarnsMeer door kwaliteit, J. van Ettinger en J. Sittig.Economic Arithmetic, Robin MarrisLehrbuch der praktischen Statistik, Bevolkerungs‐, Wirtschafts‐, Sozialstatistik, Peter QuanteStatistisch Stedenboek. Cijfers omtrent de Nederlandse gemeenten met 50.000 en meer inwoners, 1955‐1960De Joden in Nederland na de tweede wereldoorlog. Een demografische analyse, Amsterdam 1g61, 39 blz.Waterlandse Varia, W. A. van der DonkGezinsbudgetten in Belgie 1957‐1958, Levenswijze in drie sociale beroepsmilieus, Pierrede BiePapers on National Income and Allied Topics, Vol. I, Edited by V. K. R. V. Rao, S. R. Sen, M. V. Divatia and Uma DattaStatistics of Deadly Quarrels, L. F. RichardsonArms and Insecurity, L. F. RichardsonLinear Programming, Sauli. GassEinfuhrung in die Theorie der Spiele, Ewald BurgerMathematical methods for digital computers, Anthony Ra1ston and Herbert

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1962.tb01190.x

出版商:Blackwell Publishing Ltd    

年代:1962

数据来源: WILEY