An in-class activity is described that can be used not only to motivate hypothesis testing, but also to understand and compute the p-value and power in a statistical test. (Contains 3 figures.)

This article tackles the problem of what should be done with real textual data that are contaminated by errors of recording, particularly when the data contain words that are misspelt, unintentionally or otherwise. (Contains 5 tables and 2 figures.)

We propose a new limited-information goodness of fit test statistic C[subscript 2] for ordinal IRT models. The construction of the new statistic lies formally between the M[subscript 2] statistic of Maydeu-Olivares and Joe (2006), which utilizes first and second order marginal probabilities, and the M*[subscript 2] statistic of Cai and Hansen…

This article profiles 20 Web sites that can assist practitioners and researchers in locating statistics and resources on special education demographics. Web sites are divided into the following sections: authoritative reports regarding disabilities, federally funded centers on disability statistics, brief reports, specialized search tools, and…

The data collected for this report can be divided into three segments: a 14-year collection, 1950-51 through 1963-64, on which analyses were performed and the original predictions generated; a six-year follow-up stage, beginning in 1964-65; a twenty-year collection, 1950-51 through 1969-70, from which new predictions were generated; and a…

This volume, an analysis of international trends in student exchange programs, is presented in two parts. Part One contains the actual analysis, supplemented by an annex of tables which summarize world and regional trends. Part Two contains "country tables" for 151 countries and territories in which students abroad are presented according to (a)…

Examines the importance of defining terms in the process of gathering statistical data. Cites the example of the debate over the number of children abducted by strangers. Concludes that statistics are part of the persuasive rhetoric of social problem promotion and have social consequences. (FMW)

This manual is a first effort to begin to identify, describe, and develop procedures for assessing various aspects of digital reference service. Its overall purpose is to improve the quality of digital reference services and assist librarians to design and implement better digital reference services. More specifically, its aim is to: assist…

This monograph covers the theory, application, and interpretation of both descriptive and inferential statistical techniques in institutional research. Each chapter opens with a hypothetical case study, which is used to illustrate the application of one or more statistical procedures to typical research questions. Chapter 2 covers the comparison…