A jack knife is a pocket knife that is put to many tasks, because it's ready to hand. Often there could be a better tool for the job, such as a screwdriver, a scraper, or a can-opener, but these are not usually pocket items. In statistical terms, the expression implies making do with what's available. Another simile, of an extreme situation, is…

This brief will discuss patterns of science and engineering educational attainment within the foreign-born population living in the United States, using data from the 2010 American Community Survey (ACS). The analysis is restricted to the population aged 25 and older, and the results are presented on science and engineering degree attainment by…

In this paper we present time series data collected from a cafe run by business students at a Midwestern public university. The data were collected over a ten-week period during the spring semester of 2010. These data can be used in introductory courses to illustrate basic concepts of time series and forecasting, including trend, seasonality, and…

Resampling methods including randomization test, cross-validation, the jackknife and the bootstrap are widely employed in the research areas of natural science, engineering and medicine, but they lack appreciation in educational research. The purpose of the present review is to revisit and highlight the key principles and developments of…

This "Research Commentary" addresses the quality of statistical research in mathematics education. To do so, 10 years of Journal for Research in Mathematics Education (JRME) articles were analyzed on the basis of criteria suggested by the American Educational Research Association, American Psychological Association, and National Council for…

The author discusses validation hierarchies grounded in the tradition of quantitative research that generally consists of the criteria of validity, reliability and objectivity and compares this with similar criteria developed by the qualitative tradition, described as trustworthiness, dependability and confirmability. Although these quantitative…

Generalized linear models (GLMs), as defined by J. A. Nelder and R. W. M. Wedderburn (1972), unify a class of regression models for categorical, discrete, and continuous response variables. As an extension of classical linear models, GLMs provide a common body of theory and methodology for some seemingly unrelated models and procedures, such as…

This article summarizes the accomplishments of the Bureau of Labor Statistics in implementing several of the Levitan Commission's recommendations to improve labor data and in conducting activities preparatory to the adoption of others. Examines changes in the Current Population Survey program, Current Employment Statistics surveys, and use of the…

In an effort to highlight the importance of identifying children who have been lead poisoned, the Illinois Department of Public Health produces its surveillance report to alert the community to the geographical risk of lead poisoning and to report on screening results. The hope is that increased public awareness will result in less harm to…

In order to highlight the importance of identifying children with elevated blood lead levels, the Illinois Department of Public Health produces its surveillance report to present state and county level data on the number of children screened for and identified with lead poisoning. In Illinois, all children between 6 and 84 months of age must be…

In order to highlight the importance of identifying children with elevated blood lead levels, the Illinois Department of Public Health produces its surveillance report to present state and county level data on the number of children screened for and identified with lead poisoning. In Illinois, all children between 6 and 84 months of age must be…

Statistical quality control--SQC (consisting of Statistical Process Control, Process Capability Studies, Acceptance Sampling and Design of Experiments) is a very important tool to obtain, maintain and improve the Quality level of goods and services produced by an organization. Despite its importance, and the fact that it is taught in technical and…

In order to highlight the importance of identifying children with elevated blood lead levels, the Illinois Department of Public Health produces its surveillance report to present state and county level data on the number of children screened for and identified with lead poisoning. In Illinois, all children between 6 and 84 months of age must be…

This report provides estimates of job and occupational mobility by demographic, educational and labour market variables using data from the Australian Bureau of Statistics (ABS) "Labour Mobility" survey for 2002. The report provides information on the effects of these variables on the probability of job separation. It also identifies the…

This supplement to "Postsecondary Student Terminology," a National Center for Education Statistics handbook, examines postsecondary education policy issues relevant to information needs about students, procedures used in identifying information items needed to statistically evaluate the issues, and an illustrative database for postsecondary…