Broad trends in occupational employment have been projected fairly accurately by the Bureau of Labor Statistics and significant improvements have been made in procedures for developing projections. However, accuracy has not increased over time. (JOW)

Discusses the objectives of the study of Economics, which include anticipating future events and explaining current developments. The article points out that an acquaintance with past economic developments enhances the ability to predict the future. Research into the reasons for economic events often can uncover the multiple causes of a given…

Presents: "Prices of United States and Foreign Published Materials"; "Book Title Output and Average Prices"; "Book Sales Statistics, 1998"; "United States Book Exports and Imports: 1998"; "International Book Title Output: 1990-96"; "Number of Book Outlets in the United States and Canada";…

We consider power calculation in structural equation modeling with data missing completely at random (MCAR). Muth?n and Muth?n (2002) recently demonstrated how power calculations with data MCAR can be carried out by means of a Monte Carlo study. Here we show that the method of Satorra and Saris (1985), which is based on the nonnull distribution of…

A number of important applications require the clustering of binary data sets. Traditional nonhierarchical cluster analysis techniques, such as the popular K-means algorithm, can often be successfully applied to these data sets. However, the presence of masking variables in a data set can impede the ability of the K-means algorithm to recover the…

The power output achieved at peak oxygen consumption (V[O.sub.2]peak) and the time this power can be maintained (i.e., Tmax) have been used in prescribing high-intensity interval training. In this context, the present study examined temporal aspects of the V[O.sub.2] response to exercise at the cycling power that output well trained cyclists…

This study examined the access of books among six communities in the greater Los Angeles area: Brentwood, Beverly Hills, South Central, Watts, East Los Angeles, and Compton, participants included 60 students, ages 7 to 12 years, selected from each community. The survey examined access to books in the home, classroom library, school library and…

This article proposes an item exposure control method, which is the extension of the Sympson and Hetter procedure and can provide item exposure control at both the item and test levels. Item exposure rate and test overlap rate are two indices commonly used to track item exposure in computerized adaptive tests. By considering both indices, item…

This article reconsiders the issue of clinical versus statistical prediction. The term clinical is widely used to denote 1 pole of 2 independent axes: the observer whose data are being aggregated (clinician/expert vs. lay) and the method of aggregating those data (impressionistic vs. statistical). Fifty years of research suggests that when…

The purpose of this Information Aid is to alert school officials to changes and revisions in the Consumer Price Index (CPI), to familiarize them with differences between the former CPI and the new and revised indexes, to demonstrate how the U.S. Bureau of Labor Statistics (BLS) computes changes in the CPI, to indicate appropriate uses of the CPI,…

This study was designed to examine the effectiveness of a ninth grade transition program at a suburban high school in Louisiana. Student data were analyzed from two groups of first time freshmen who indicated a need for help in mathematics: one without a transition program and one with a transition program. Academic data included standardized test…

This seventh edition of "Key Data on Education in Europe" retains its main special feature which is the combination of statistical data and qualitative information to describe the organisation and functioning of education systems in Europe. The present 2009 edition maintains the subject-based structure defined by the previous one but…

It is a widely held belief that an anchor test used in equating should be a miniature version (or "minitest") of the tests to be equated; that is, the anchor test should be proportionally representative of the two tests in content and statistical characteristics. This paper examines the scientific foundation of this belief, especially…

This report builds upon a series of National Center for Education Statistics (NCES) reports on high school dropout and completion rates that began in 1988. It presents estimates of rates in 2002 and 2003, provides data about trends in dropout and completion rates over the last three decades, and examines the characteristics of high school dropouts…

The purpose of this publication is two fold. First, it presents data on the postsecondary educational experiences of students from the high school class of 1992 who concentrated in CTE while in high school, including information on their postsecondary enrollment, coursetaking, and degree attainment. Second, it demonstrates the richness and unique…