Regression Revisited

Sir Francis Galton introduced median regression and the use of the quantile function to describe distributions. Very early on the tradition moved to mean regression and the universal use of the Normal distribution, either as the natural ‘error’ distribution or as one forced by transformation. Though the introduction of ‘quantile regression’ refocused attention on the shape of the variability about the line, it uses nonparametric approaches and so ignores the actual distribution of the ‘error’ term. This paper seeks to show how Galton's approach enables the complete regression model, deterministic and stochastic elements, to be modelled, fitted and investigated. The emphasis is on the range of models that can be used for the stochastic element. It is noted that as the deterministic terms can be built up from components, so to, using quantile functions, can the stochastic element. The model may thus be treated in both modelling and fitting as a unity. Some evidence is presented to justify the use of a much wider range of distributional models than is usually considered and to emphasize their flexibility in extending regression models.     

Psychographic constructs and demographic segments

As marketers attempt to place advertisements based on demographic profiles, the use of psychographic information becomes more important. The purpose of this research is to evaluate the validity of selected psychographic measures as well as to then relate these constructs to demographic segments. The analysis, using LISREL VI, assesses the constructs, which then, based on MANOV, are related to demographic segments. Implications of the study for validating psychographic measures and for applying this knowledge are discussed. © 1995 John Wiley & Sons, Inc.     

A Monte Carlo study of autoregressive integrated moving average processes

Six of the simpler ARMA type models are examined with respect to properties of a variety of proposed estimators of unknown parameters. The findings suggest that if only one estimation method were available to a researcher the choice should probably be maximum likelihood. Stationarity- and invertibility-restricted estimation would appear appropriate when parameters are thought to be within 5 percent of constraint boundaries.     

ACCOUNTING FOR EMPLOYEE ENTITLEMENTS*

This paper considers the problem of accounting for employee entitlements. Accrued entitlements to annual leave, sick leave and long service leave are evaluated by reference to the basic characteristics of an accounting liability and a case is presented for liability recognition in each instance. An empirical survey undertaken by the authors shows current practice in this area and indicates the need for improved financial reporting.     

On restricted estimation in linear models

Efficient estimation of models under linear restrictions on parameters has received little attention. We present a unified approach which takes account of both full rank and less than full rank design and constraint matrices. The procedure is numerically fast, accurate, and space efficient. An example is included.     

Economic and financial themes in Australian aged care

This contribution reflects the results of work for a review of aged care in Australia. Initial material covers the policy arrangements in place prior to the beginning of the Review in September 2002. The main feature of the contribution is a survey of economic and financial performance of aged care entities not hitherto attempted. Most attention is directed to labour costs in relation to total costs and earnings before interest and taxes. Cross-section analyses are based on institutional differences between providers of services with some operating as “for profit” entities but most are not reflecting their religious, community-based and charitable origins. Locational differences are also examined. The results show a very great disparity in experiences so that notions of the average experience across providers of services cannot be upheld. Differences between the top 10 percent of entities offering services and the bottom quartile are striking. The implications for development of new strategic approaches to policies are clear.     

Dr. Martin Bronfenbrenner (1914-1997): Scholar, Critic, Cynic, and Comrade-in-Arms

ABSTRACT Professor Martin Bronfenbrenner's mark on the economics profession was significant and worth remembering. He touched the lives of many as a father, cousin, teacher, scholar, expert referee, colleague, and judge of important contemporary debates. Of special interest is his unique personality. He was a specialist in self-effacement, peppered with liberal shakes of cynicism and sarcasm. Despite all this, he managed to win the respect and hearts of individuals on several continents and across several generations. This essay brings a small but diverse part of the story together in one place.