Statisticians use words deliberately and specifically, but not necessarily in the way they are used colloquially. For example, in general parlance "statistics" can mean numerical information, usually data. In contrast, one large statistics textbook defines the term "statistic" to denote "a characteristic of a…

Empirical studies estimating the effect of private school competition on student outcomes commonly use the share of Catholics in the local population as an instrument for private school competition. I show that this is not a valid instrument since it is endogenous to private school competition and suggest using instead the local share of Catholics…

Using Microsoft® Excel, several interactive, computerized learning modules are developed to illustrate the Central Limit Theorem's appropriateness for comparing the difference between the means of any two populations. These modules are used in the classroom to enhance the comprehension of this theorem as well as the concepts that provide the…

A split-sample replication stopping rule for hierarchical cluster analysis is compared with the internal criterion previously found superior by Milligan and Cooper (1985) in their comparison of 30 different procedures. Situations under which the methods are equivalent or not equally useful are discussed. (SLD)

Populations where free access is denied pose special problems to the survey researcher. In attempting to make general estimates of the size of the composition of the audience in the USSR to Western radio broadcasts, a simulation technique (Mostellerization) has been developed which provides estimates of underlying data from aggregate results. (PD)

The relationship between population density and pathology is assessed in New York City. (Editor)

Included in this report on Arizona Indian demographic data are "an evaluation of several recent studies of Indian populations" and "an extensive analysis of methods for obtaining and maintaining accurate data in the future." Recommended methods by which accurate population data for the smaller reservations should be maintained are included in the…

This paper describes a two-stage sampling design for obtaining probability samples of the elderly and other specialized populations. Results indicate elderly individuals will respond, use of the design does not appear to increase sample bias, and the method is extremely inexpensive. (Author)

Discusses recent labor force trends and how they affect research methodology. Tables are included which indicate new estimates and trends in worklife expectancy, measures of labor force mobility, and trends in mobility rates. (CT)

This methodology was developed to obtain sound population and industrial projections for Tennessee, but should be applicable for any small area. The large volume of data required the use of computers, and the nine programs are reproduced in full. The methodology is designed to point out manpower problems which would arise in a region if the…

Systematic knowledge about the problems and needs of Asian Americans living in middle-size and smaller communities throughout the U.S. is nonexistent. This paper explores the issues involved in assessing the quality of life of Asian Americans in middle-size cities and small communities in the U.S. It highlights neglected considerations in the…

Relationships between Bayesian ability estimates and the parameters of a normal population distribution are derived in the context of classical test theory. Formulas are presented for practical work with Bayesian ability estimates, and a numerical illustration is provided. (SLD)

Compares and contrasts different models of the relationship between integration levels and the varying racial composition of areas within the State of North Carolina using data collected in 1967-68. (JM)