ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1951.tb00567.x

出版商:Blackwell Publishing Ltd    

年代:1951

数据来源: WILEY

摘要:

SummaryThe basic idea of correlation analysisIn his introduction to the four following papers on applications of correlation methods, Prof. Tinbergen presents correlation analysis as the means of establishing relationships between the factors involved, in those fields of natural and social sciences, where proper experimenting is impossible.Prof. Tinbergen recommends that workers in different fields take cognizance of each other's results with applications of correlation analysis — hence this symposium. On the other hand, uncritical imitation of methods used succesfully in one field, e.g. biology, may lead to serious failure in another, e.g. economic

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1951.tb00568.x

出版商:Blackwell Publishing Ltd    

年代:1951

数据来源: WILEY

摘要:

SummaryThe establishing of standards in the transport trade by correlation analysisA firm of wholesale grocers have to deliver, once a week, goods to their clients according to their varying specifications. Delivery is effectuated by the firm's motor trucks.Observations of standing and moving times were made by means of automatically recording instruments.Standard time of delivery is given by the equation:T = 2,29G + 10,64K + 1,82A + 19,11T… standard time in minutesG… total weight to deliver, in 100 kgK… number of clients to visitA… total distance to be covered

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1951.tb00569.x

出版商:Blackwell Publishing Ltd    

年代:1951

数据来源: WILEY

摘要:

SummaryOn income elasticities derived from family budgetsThis is a small part of a research into income elasticities, which was started when dr Stuvel was working under Prof. Richard Stone at the Department of Applied Economics of the University of Cambridge and was continued after dr Stuvel's return to Holland.Advantages and disadvantages are discussed of the two alternative methods of calculating income elasticities, to wit from time‐series or from family budgets.The first method is appropriate if one is interested in short‐term changes in consumption by changes in income; the second method is suitable whenever the economist's interest is centred on long‐term changes in consumption. The mathematical form chosen for the regression equations on family income is: C = aYbso that the income elasticity is independent of i

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1951.tb00570.x

出版商:Blackwell Publishing Ltd    

年代:1951

数据来源: WILEY

摘要:

SummaryTesting homogeneity of a series of observations by correlation analysisFour methods of preserving food were compared by having ten tasters independently judge appearance, flavour, consistency and taste of each of four components of the menu. The tasters laid down their judgment in one of the figures o, 1, 2 or 3. For each taster the correlation coefficient was calculated between his 16 totals (4 components × 4 methods of preserving) and the average totals of the other tasters.Divergent results were found for taster no. 1, 4 and 10 (practically no correlation) and taster no. 2 (negative correlation). Taster no. 2 appeared to have used the scale wrongly. This could consequently be corrected. The results of taster no. 1, 4 and 10 were eliminated, which led to better results into the consecutively executed analysis of variance

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1951.tb00571.x

出版商:Blackwell Publishing Ltd    

年代:1951

数据来源: WILEY

摘要:

SummaryCorrelation analysis in applied psychologySome of the problems treated by correlation methods are, in applied psychology (test psychology):investigation of test reliabilityitem‐validationvalidation of tests and testing programsrelationships between testsfactor analysis.As an example the author discusses the validation of a selection test used in Dutch technical schools.Statistical psychology in the Netherlands is still in its infancy, but the greatest obstacle to its growing up has been removed, viz. the opinion that quantitative methods are not, as a matter of principle, applicable to problems in psycholog

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1951.tb00572.x

出版商:Blackwell Publishing Ltd    

年代:1951

数据来源: WILEY

摘要:

SummaryRelations between the regressioncoëfficië nts of Galton and Frisch in case of lineair transformationRelations are derived between Galton's two regressioncoëfficiënts and Frisch' diagonal regressioncoëfficiënt. The last is proved to be the geometric mean of the other ones. The influence of several kinds of lineair transformation on correlation and regressioncoëfficiënts is discussed. The paper is followed by some ex

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1951.tb00573.x

出版商:Blackwell Publishing Ltd    

年代:1951

数据来源: WILEY

摘要:

SummaryThe splitting up of heterogeneous distributions into two normal componentsIt is shown that the frequency distributions of the nucleus volumes in various areas of the human cerebral cortex may be adequately described by two normal distributions superimposed on each other. The two normal components of the frequency distributions are found graphically by means of previously prepared sets of normal frequency curves. Curves of one set have the same mean and standard deviation, curves belonging to different sets have different standard deviations. The curves of one set have areas ranging from 10% to 100%.

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1951.tb00574.x

出版商:Blackwell Publishing Ltd    

年代:1951

数据来源: WILEY

摘要:

Book reviewed in this article:Economics, Statistics and Thermodynamics, Dr J. H. C. LismanSymmetrietoetsen en andere toepassingen van de theorie van Neyman en Pearson, J. HemelrijkThe general one‐dimensional random walk with absorbing barriers with application to sequential analysis, J. H. B. Kemperman.Sampling methods for Censuses and Surveys, F. Yates.Statistics, An‐Intermediate Text‐book, Volume I, door N. L. Johnson and H. Telley.Graphische Tafeln zur Beurteilung statistischer Zahlen, door S. Koller, Dresden und LeipzigThe place of statistical methods in biological and chemical experimentation. Ref. Edit. Commit. L. C. Miller and J. W.

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1951.tb00575.x

出版商:Blackwell Publishing Ltd    

年代:1951

数据来源: WILEY

ISSN:0039-0402    

DOI:10.1111/j.1467-9574.1951.tb00576.x

出版商:Blackwell Publishing Ltd    

年代:1951

数据来源: WILEY