Accent on Teaching Materials

This department includes the two sections New Developments in Statistical Computing and Statistical Computing Software Reviews; suitable contents for each of these sections are described under the respective section heading. Articles submitted for the department, outside the two sections, should not be highly technical and should be relevant to the teaching or practice of statistical computing.

An unbiased estimator of e is used to motivate a simple simulation exercise that requires only observations from the distribution uniform on (0, 1). Antithetic variables are introduced and applied to the simulation problem to give a second unbiased estimator of e with reduced variance.     

Self-exclusion: A Proposed Gateway to Treatment Model

Self-exclusion is a programme utilized by the gaming industry to limit access to gaming opportunities for problem gamblers. It is based on the following principles: (1) The gaming industry recognizes that a proportion of community members gamble excessively and have difficulty controlling gambling behaviours; (2) The gaming industry has a responsibility to provide a safe gaming environment and to assist in minimizing the negative impact on individuals displaying problem gambling behaviours; (3) Individuals must accept personal responsibility for limiting gambling behaviours to affordable levels; and (4) Self-exclusion is not a treatment designed to address psychological processes. The objective of the present paper is to propose a unifying structure for self-exclusion programmes as a gateway to treatment based on a system operated by independent ‘educators’ whose roles and responsibilities include informing individuals of the purpose of self-exclusion, establishing links and a gateway for access to supplementary services and monitoring and reporting the effectiveness of the overall programme.     

Exact permutation inference for two sample repeated measures data

Experiments in which very few units are measured many times sometimes present particular difficulties. Interest often centers on simple location shifts between two treatment groups, but appropriate modeling of the error distribution can be challenging. For example, normality may be difficult to verify, or a single transformation stabilizing variance or improving normality for all units and all measurements may not exist. We propose an analysis of two sample repeated measures data based on the permutation distribution of units. This provides a distribution free alternative to standard analyses. The analysis includes testing, estimation and confidence intervals. By assuming a certain structure in the location shift model, the dimension of the problem is reduced by analyzing linear combinations of the marginal statistics. Recently proposed algorithms for computation of two sample permutation distributions, require only a few seconds for experiments having as many as 100 units and any number of repeated measures. The test has high asymptotic efficiency and good power with respect to tests based on the normal distribution. Since the computational burden is minimal, approximation of the permutation distribution is unnecessary.     

Tables of the exact quantiles of the top-down correlation coefficient for n - 3(1)14

Iman and Connver (1985, 1987) have suggested the top-down correlation coefficient as a measure of association when n objects are ranked by two or more independent sources and interest centers primarily on agreement in the top rankings, with disagreements on items at the bottom of the rankings being of little or no importance. The top-down correlation coefficient results from computing the ordinary Pearson correlation coefficient on Savage scores. Quantiles of the exact distribution of the top-down correlation coefficient based on the assumption of independent rankings are provided for n = 3(1)14.     

ECONOMIC GROWTH AND THE SEPARATION OF CHURCH AND STATE: THE FRENCH CASE

This article provides a test of the secularization hypothesis, which argues that economic growth, industrialization, increased literacy, and low fertility decrease religiosity. It focuses on the elections of the secular politicians who voted in favor of the separation between Church and State in the French Parliament in 1905. If the secularization hypothesis is correct, these secular politicians should have been elected in the most developed areas of France at the turn of the twentieth century. Contrary to the predictions of the secularization hypothesis, we find that the support for secular politicians originated in the rural areas of France. (JEL Z12, D72, N43)