The purpose of the study was to identify strategies used by preservice elementary teachers to index distributions of data. A secondary purpose of the study was to investigate whether representational form influenced the type of representative values constructed. Two hundred eighty-three preservice teachers were administered a selection of tasks…

A sample of 134 sixth-grade students who were using the Connected Mathematics curriculum were administered an open-ended item entitled, Vet Club (Balanced Assessment, 2000). This paper explores the role of misconceptions and naive conceptions in the acquisition of statistical thinking for middle grades students. Students exhibited misconceptions…

New data on noncredit course offerings at colleges and universities help to generate a statistical portrait of these increasingly important programs.

A one-week experiment that was designed for providing students in an analytical chemistry laboratory course with an experience in statistical treatment of data is described. This laboratory experience benefited the students in several areas as they gained familiarity with many analytical glassware that they had not seen or used before, the…

A new test index is defined as the probability of obtaining two randomly selected test scores (PDTS) as statistically different. After giving a concept definition of the test index, two simulation studies are presented. The first analyzes the influence of the distribution of test scores, test reliability, and sample size on PDTS within classical…

This study uses the context of the weather to explore the development of students' intuitive ideas of variation from pre-Grade 1 to Grade 9. Three aspects of understanding these intuitions associated with variation are explored in individual videotaped interviews with 73 students: explanations, suggestions of data, and graphing. The development of…

This article focuses on the use of statistics in policy and evaluation research and the need to present statistical information in a form that is meaningful to mixed audiences. Three guidelines for formulating and presenting meaningful statistics are outlined. Understandability ensures that knowledge of statistical methods is not required for…

We consider the question of how variation in the number and reliability of indicators affects the power to reject the hypothesis that the regression coefficients are zero in latent linear regression analysis. We show that power remains constant as long as the coefficient of determination remains unchanged. Any increase in the number of indicators…

The number of Hispanic students in the nation's public schools nearly doubled from 1990 to 2006, accounting for 60% of the total growth in public school enrollments over that period. Strong growth in Hispanic enrollment is expected to continue for decades, according to population projection by the U.S. Census Bureau. Using data from the 2006…

This article describes an action research at an alternative high school which explores drop-out prevention strategies with first-year students. Student retention is extremely challenging for alternative schools. Because their mission is to provide a second chance to students who could not succeed in a regular setting, those schools regularly must…

Language choice is often studied as choices made by the state at the level of national language planning or as individual choice of language or variety in language use. There has been little research to directly connect these two aspects of language choice. This paper attempts to incorporate the two aspects and other related phenomena in a…

Purpose: The study describes Oregon state policy and supply developments for licensed long-term-care settings, particularly apartment-style assisted living facilities and more traditional residential care facilities. Design and Methods: Data came from a variety of sources, including state agency administrative records, other secondary data…

This document presents the proceedings of the National Disability Statistics and Policy Forum. Preliminary material includes an introduction (Mitchell P. LaPlante) and highlights of each presentation. Presentations are then grouped by session. Session titles and presenters were: (1) "Trends in Disability Prevalence" (Mitch LaPlante, Vicki…

This study presents several analyses of doctoral dissertation research completed by students in instructional design and technology (ID&T) programs from 1977 through 1988: (1) the number of dissertations completed during each of the 12 years; (2) the 46 U.S. institutions at which the research was done and the number of doctoral degrees in ID&T…

The directory lists regional and subregional libraries offering services to blind and physically handicapped individuals. Entries are arranged alphabetically by state and include name and address, telephone number, librarian's name, hours, and details of the book and special collections as well as special services. Changes in names, addresses, and…