摘要:

For analyzing life-test data and estimating the length-of-life distribution function, Taguchi recommends the method of Minute-Accumulating Analysis (or ‘minimum-unit’ analysis), through the categorization of the available data into a binary form ‘1–0’ (‘alive-dead’). In this paper we investigate the advantages and drawbacks of Minute Analysis using an actual case study.

ISSN:0266-4763    

DOI:10.1080/757582829

出版商:carfax publishing company    

年代:1990

数据来源: Taylor

摘要:

We show that the various times series models, reported in the literature, for the Canadian lynx data form interesting clusters.

ISSN:0266-4763    

DOI:10.1080/757582830

出版商:carfax publishing company    

年代:1990

数据来源: Taylor

摘要:

Experiments to estimate the feeding rates of aquatic insect larvae involved destructive sampling of larvae to determine the position of an introduced food marker as it passed through their guts. A normal linear model involving censoring (equal to complete passage) and truncation is fitted to the measurement of the passage of food. A method for maximum likelihood estimation is derived together with the second order variance-covariance equations. Methods for estimating the effect of larval size on feeding rate are examined.

ISSN:0266-4763    

DOI:10.1080/757582831

出版商:carfax publishing company    

年代:1990

数据来源: Taylor

摘要:

The origins of words in current use often hold surprises. Statistical terminology is no exception, and some of the more interesting etymologies are considered. They include coined words, ‘hi-jacks' from other disciplines, and words which have gradually evolved meanings quite different from the original ideas they expressed (as witness the title).

ISSN:0266-4763    

DOI:10.1080/757582832

出版商:carfax publishing company    

年代:1990

数据来源: Taylor

摘要:

A basic assumption of many statistical tests is that the samples are drawn from normal distributions. However, if the data are rounded, the question arises of how this affects the usual tests. Tricker (1990) considered the effect of rounded normal data on the significance level of four test statistics. Here the power of these tests is investigated and whether this power is adversely affected for the degree of precision recommended in Tricker's paper.

ISSN:0266-4763    

DOI:10.1080/757582833

出版商:carfax publishing company    

年代:1990

数据来源: Taylor

摘要:

Principal component and correspondence analysis can both be used as exploratory methods for representing multivariate data in two dimensions. Circumstances under which the, possibly inappropriate, application of principal components to untransformed compositional data approximates to a correspondence analysis of the raw data are noted. Aitchison (1986) has proposed a method for the principal component analysis of compositional data involving transformation of the raw data. It is shown how this can be approximated by a correspondence analysis of appropriately transformed data. The latter approach may be preferable when there are zeroes in the data.

ISSN:0266-4763    

DOI:10.1080/757582834

出版商:carfax publishing company    

年代:1990

数据来源: Taylor

摘要:

With the recent accent on varying parameter models, theoretical studies have concentrated on estimating equations where all the coefficients are stochastic. This paper analyses an estimation of a single equation in which the coefficients of certain exogenous variables are fixed and those of other exogenous variables are random.

ISSN:0266-4763    

DOI:10.1080/757582835

出版商:carfax publishing company    

年代:1990

数据来源: Taylor

摘要:

The growth curve model Yn×p= An×pξmtimes;kBk×p+ Enxp, whereYis an observation matrix, &sigma is a matrix of unknown parameters,Ais a known matrix of rank m,Bis a known matrix of rank k with 1'= (1, …, 1) as its first row, and the rows ofEare independent each distributed as Np(0,Σ,) is considered. The problem of constructing the prediction intervals for future observations using the above model is considered and approximate intervals assuming different structures on σ are derived. The results are illustrated with several data sets.

ISSN:0266-4763    

DOI:10.1080/757582836

出版商:Carfax Publishing Company    

年代:1990

数据来源: Taylor

摘要:

A methodology for partially ordering a set of multivariate observations is introduced. The method depends on an iterative reapplication of singular value decomposition (SVD) to partition the data into simply ordered subsets. Five measures of the fiscal capacity of states are analyzed to decide whether a majority can be simply ordered. Partial-order analysis uncovers a group of 38 states which can be simply ordered, a second group of five which can also be simply ordered, but not with the other 38. The remaining eight have no simply-ordered subgroup.

ISSN:0266-4763    

DOI:10.1080/757582837

出版商:carfax publishing company    

年代:1990

数据来源: Taylor

摘要:

This paper indicates the potential application of the characterization theory to the mixture model. It discusses a particular example of a mixture model and concludes that successful application of this theory can be made in order to choose the appropriate mixture model and the mixing parameter.

ISSN:0266-4763    

DOI:10.1080/757582838

出版商:carfax publishing company    

年代:1990

数据来源: Taylor