ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1946.tb00039.x

出版商:Blackwell Publishing Ltd    

年代:1946

数据来源: WILEY

摘要:

Versterking van het kwaliteits‐bewustzijn in de massafabricage dringend noodzakelij

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1946.tb00040.x

出版商:Blackwell Publishing Ltd    

年代:1946

数据来源: WILEY

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1946.tb00041.x

出版商:Blackwell Publishing Ltd    

年代:1946

数据来源: WILEY

摘要:

SummaryTolerance problems in mechanical engineering ought to be treated with statistical methods.It is shown that the use of range (instead of standard deviation) for measuring variability in tolerances and fits leads to systematic errors.The suggestion is made to measure variability in mechanical engineering byT= 4,65 s̀, being the 98%‐range in the case of normal distribution.A simple statistical approach to selective assembling is mention

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1946.tb00042.x

出版商:Blackwell Publishing Ltd    

年代:1946

数据来源: WILEY

摘要:

Berekening van de statistische tolerantie van een sorteerpassing (twee sorteergroepen, normale universa)

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1946.tb00043.x

出版商:Blackwell Publishing Ltd    

年代:1946

数据来源: WILEY

摘要:

SummaryA simplified method for the working out of statistical control data by means of a suitable abacus is described and explained. A practical example for a population corresponding to the Normal (Gaussian) Curve is given. This method can also be applied to Frequency Distributions not obeying the Law of Gauss, provided they can be represented by a known mathematical function.A simplified method for the compilation of statistical data concerning weights by means of a balance provided with numerators, is described.The possibility of the application of a system of numerators to automatic dosing machines is discussed, by means of which control, based on random sampling, could be replaced by weighing dosages individually.

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1946.tb00044.x

出版商:Blackwell Publishing Ltd    

年代:1946

数据来源: WILEY

摘要:

Een methode voor het vergelijken van de bekwaamheid van controleurs tot het verrichten van massale metingenSummaryThe reliability of sampling inspection is usually being judged by comparing its results with those of a 100% inspection of the same batch. Obviously the need arises to find a method with which it will be possible to determine the reliability of 100% inspection itself.It is shown that this may be done by means of an experiment.A description is given of an experiment carried out at “Van der Heem N.V.”The diameters of 600 rotors were determined with the aid of six precision measuring instruments by six inspectors in turn.A method developed by Spearman is applied which makes it possible to express the capacity of the inspectors involved in a “saturation‐coefficient” which is computed from the correlation coefficients between the six series of mea

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1946.tb00045.x

出版商:Blackwell Publishing Ltd    

年代:1946

数据来源: WILEY

摘要:

SummaryA series of articles will be given to explain the principles underlying the science of statistics.

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1946.tb00046.x

出版商:Blackwell Publishing Ltd    

年代:1946

数据来源: WILEY

摘要:

SummaryThe comment on the public opinion poll concerning the results of the election 1946 is discussed. It is shown that the mean error, being dependent on the number of parties, cannot be used to express numerically the goodness of the forecast.

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1946.tb00047.x

出版商:Blackwell Publishing Ltd    

年代:1946

数据来源: WILEY

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1946.tb00048.x

出版商:Blackwell Publishing Ltd    

年代:1946

数据来源: WILEY