The purpose of this paper is to provide information about how students' scores change when they retake the PSAT/NMSQT as juniors or take the SAT in the spring after they take the PSAT/NMSQT as juniors. Two research questions guided this study and motivated the approach for analysis of the data: How do scores change for students who took the…

Argues that the gamma mixture of Poisson processes, for all its perceived defects, can be used to make predictions regarding future library book circulations of a quality adequate for general management requirements. The use of the model is extensively illustrated with data from two academic libraries. (Nine references) (CLB)

Considers forecasts of A-Level results made by teachers for candidates for a Management Sciences university course. The forecasting mechanism is found to be accurate but some conclusions which are important for university selection can be made. (Author)

Among the five rounds of labor force projections conducted between 1970 and 1980, those estimates produced in 1978 yielded results closest to actual 1985 values. (Author)

This paper reviews the existing multidimensional item response theory (IRT) models and demonstrates how one of the models can be applied to estimation of abilities from a test measuring more than one dimension. The purposes of this paper were threefold. First, the fundamental concepts required when considering multidimensional models for the…

Using a constant elasticity of substitution production function and data from a national survey conducted in 1977 by the American Association of University Professors, this article projects the size and composition of the academic labor force in higher education through 1987. Tables provide data on projections. (PB)

Discusses the lack of quantitative standards in the ARL-ACRL Standards for University Libraries and demonstrates the use of statistical techniques to analyze data and derive minimal criteria which, while they describe quantitative relationships among libraries, provide no indication of quality of services. Sixteen references are cited. (RAA)

Explains some observed library circulation frequency distributions through use of a simple stochastic model for the borrowing of books from a library collection. Parameters of the model are described and the model is applied to circulation data from three academic libraries. (Author/SW)

This paper presents an empirical analysis of the real internal rate of return to the old age insurance (OAI) portion of the old age, survivors, and disability insurance (OASDI) program for worker-only beneficiaries retiring between 1967 and 1970. Section I reviews the analytical background for this study. The issues concern alternative measures of…

This report contains the first projections produced by the federal government of the Spanish-origin population by age, sex, and race for the years 1983 to 2080. These national projections, based on 1982 population estimates, show what the future Spanish-origin population would be under various assumptions about fertility, mortality, and net…

Two models of library circulation, the Markov model and the mixed Poisson Model, are applied to circulation statistics from the University of Saskatchewan. Goodness-of-fit tests indicate that neither model fits the data; in both cases, the set of noncirculating items is larger than that predicted by the model. (Author/LRW)

In 1989, Cochise College (CC) conducted a study to determine if a positive relationship existed between grade placement scores on the Nelson-Denny or Nelson reading comprehension examination and academic performance. The study population consisted of new or first-time CC students who were tested after May 1989. Placement scores for students who…

In the summer of 1987, a project was undertaken by a consortium of eight California community colleges to develop valid and culturally fair assessment procedures for placing students into appropriate level courses. The specific objective of the project was to provide a guide to the state's community colleges for the development of these procedures…

An accurate forecast of the student demand by level on the academic departments of an institution is vital for budget and financial planning decisions, for faculty workload scheduling, and for physical facility planning. Many methods have been used to forecast this demand, ranging from "seat of your pants" guessing to highly complex…

Methods of defining and projecting a concept of consumer unit appropriate for analyses of changes in the tax-transfer system are presented. The population of persons covered by the March supplements to the Current Population Surveys is organized into simulated tax and transfer system (STATS) units and results are shown for several years. The…