摘要:

Although a traditionally Italian research topic, the subject of descriptive statistics has received renewed attention at an international level, owing to the need for a more precise charac terization of the main classes of descriptive statistics, both for application as summaries of distributions and in relation to non-parametric models and robust procedures. This paper endeavours to establish generally acceptable definitions of variability, spread, dispersion, together with their most important implications, especially concerning the construction of indexes or measures. Notwithstanding that general properties (for random variables) comprise all cases of observed distributions, some non-intuitive results will be shown concerning comparisons of statistical distributions and of some well known variability measures computed on them.

ISSN:0361-0918    

DOI:10.1080/03610918808812736

出版商:Marcel Dekker, Inc.    

年代:1988

数据来源: Taylor

摘要:

An algorithm to compute the autocovariance functions of periodic autoregressive moving average models is proposed. As a result, an easily implemented algorithm for the exact likelihood of these models is rendered possible.

ISSN:0361-0918    

DOI:10.1080/03610918808812737

出版商:Marcel Dekker, Inc.    

年代:1988

数据来源: Taylor

摘要:

The paper presents and compares two new very accurate and simple pairs of approximations for the Poisson modal probability and modal cumulative probability; these have been used by Kemp and Kemp (1987, 1988) for the generation of Poisson pseudorandom variables with varying noninteger parameter by the method of one-sided search from the mode. The approximations are rational except for the square root of an integer or half-integer.

ISSN:0361-0918    

DOI:10.1080/03610918808812738

出版商:Marcel Dekker, Inc.    

年代:1988

数据来源: Taylor

摘要:

An efficient FORTRAN subroutine for computing three nonparametric point estimators of change-points is offered. Estimates computed from the subroutine are obtained for two classical data sets

ISSN:0361-0918    

DOI:10.1080/03610918808812739

出版商:Marcel Dekker, Inc.    

年代:1988

数据来源: Taylor

ISSN:0361-0918    

DOI:10.1080/03610918808812715

出版商:Marcel Dekker, Inc.    

年代:1988

数据来源: Taylor