Likert-type item is the most popular response format for collecting data in social, educational, and psychological studies through scales or questionnaires. However, there is no consensus on whether parametric or non-parametric tests should be preferred when analyzing Likert-type data. This study examined the statistical power of parametric and…

Most quantitative analyses in workforce education are affected by missing data. Traditional approaches to remedy missing data problems often result in reduced statistical power and biased parameter estimates due to systematic differences between missing and observed values. This article examines the treatment of missing data in pertinent…

The growth in the availability of longitudinal data--data collected over time on the same individuals--as part of program evaluations has opened up exciting possibilities for evaluators to ask more nuanced questions about how individuals' outcomes change over time. However, in order to leverage longitudinal data to glean these important insights,…

In answering the question "What is the next trend in usage statistics in libraries?" an eclectic group of respondents has presented an assortment of possibilities, suggestions, complaints and, of course, questions of their own. Undoubtedly, usage statistics collection, interpretation, and application are areas of growth and increasing complexity…

A formula for determining sample size, which originally appeared in 1960, has lacked a table for easy reference. This article supplies a graph of the function and a table of values which permits easy determination of the size of sample needed to be representative of a given population. (DG)

This report, based on the results of the fifth biennial survey of humanities doctorate recipients, describes the demographic and employment characteristics of humanities Ph.D.s who received their degrees between January 1942 and June 1984 and were residing in the United States in February 1985. The number of humanities Ph.D.s in 1985 was estimated…

This report on the private school universe, a data collection system developed by the National Center for Education Statistics, presents data on schools with grades kindergarten through 12 by school size, school level, religious orientation, geographical region, and program emphasis. Numbers of students and teachers are reported in the same…

The inherent methodological problem in conducting research at multiple sites is how to best derive an overall estimate of program impact across multiple sites, best being the estimate that minimizes the mean square error, that is, the square of the difference between the observed and true values. An empirical example illustrates the use of the…

This handbook was compiled to assist OECD Member countries in the long term development of their educational statistics and to provide them with a basis of comparison for the collection of internationally comparable statistics useful to educational planners. Recent methodologica" approaches to long term planning are also discussed. The…

Approximately 1200 Danish school children aged 8, 11, and 14 participated in a questionnaire study under the caption, "Why I like to read." Data from Denmark formed part of an international study, in which 12 other countries used the same questionnaire to explore various functions of reading and to compare them over different countries.…

One of three papers commissioned as part of the Postsecondary Education Core Design Project of the National Center for Education Statistics (NCES), one of this study's purposes was to identify and set priorities for postsecondary education decisionmakers in the area of financial viability in postsecondary institutions. Another purpose was to…

This bulletin presents information relating to the national conference on the Office of Education statistical program which took place October 1-3, 1945. The material herein consists of the agenda of the conference, reports of the three study committees on (1) purpose and scope of the statistical program, (2) collection of data, and (3)…