Directed acyclic graphs (DAGs) are now a popular tool to inform causal inferences. We discuss how DAGs can also be used to encode theoretical assumptions about nonprobability samples and survey nonresponse and to determine whether population quantities including conditional distributions and regressions can be identified. We describe sources of…

This article presents the design and implementation of a study and research path for teacher education (SRP-TE) based on the Anthropological Theory of the Didactic. The goal is to analyze this teacher education proposal for inclusive statistics education aiming to overcome constraints derived from the phenomenon of the transparency of data…

This paper explores the implementation of service-learning projects in a survey sampling statistics course. In these projects, students worked with a community partner to develop and administer a survey, analyze the data collected, and present the results. A study with 23 participants was conducted to investigate whether students' attitudes…

This study analyzed the debt profile of low-income households before and after the Great Recession using the 2007, 2010, and 2013 Survey of Consumer Finances (SCF). We used Heckman selection models to investigate three debt characteristics: (a) the amount of debt, (b) debt-to-income ratio, and (c) debt delinquency. Before and after the Great…

Almost half of current academic staff will need to be replaced within three years in the Australian academic workforce. Literature suggests that casual academics are a potential solution, yet they are frequently excluded from the career development opportunities that would allow them to fulfil an ongoing academic role. Most academic development…

We have been looking at two different numbers that have been used to describe the availability of physics in U.S. high schools: 60% and 95%. Last month we noted that the U.S. Department of Education Office of Civil Rights (OCR) includes over 7,000 more public schools in the denominator than American Institute of Physics (AIP) Statistics does.…

The interaction between language and the learning of statistical concepts has been receiving increased attention. The Communication, Language, And Statistics Survey (CLASS) was developed in response to the need to focus on dynamics of language in light of the culturally and linguistically diverse environments of introductory statistics classrooms.…

This empirical study uses the 2013 Survey of Consumer Finances (SCF) to investigate the characteristics of households that hold at least one loan for educational expenses. The benefit of using household-level data is that a single household may have education loans for multiple people in the household, including the household head, spouse/partner,…

This paper reports on longitudinal study regarding integrity of testing in an online format as used by e-learning platforms. Specifically, this study explains whether online testing, which implies an open book format is compromising integrity of assessment by encouraging cheating among students. Statistical experiment designed for this study…

Statistics in Brief publications present descriptive data in tabular formats to provide useful information to a broad audience, including members of the general public. They address simple and topical issues and questions. Using data from 2011-12, this Statistics in Brief updates and expands on a previous National Center for Education Statistics…

While new technology continues to develop and become increasingly affordable, and students have increased access to electronic media, one might wonder if requiring such technology in the classroom is akin to throwing the car keys to a teen-ager who has not completed a driver's education course. Currently, no validated survey has been created…

This Methodological Brief gives an overview of statistical methods used to gauge academic growth and discusses issues surrounding the measurement of growth in gifted populations. To illustrate some of these issues, we describe a growth model that examines differences in summer lag between gifted and nongifted students. We also provide…

This article synthesises some findings of an international research project called "Know&Pol" to question the effects of the OECD's Programme for International Student Assessment (PISA) on the public debate in three European countries (France, Portugal and Scotland). Using a political science approach, it shows that Pisa did not…

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…

Low completion rates for apprentices and trainees have received considerable attention recently and it has been argued that NCVER seriously understates completion rates. In this paper Tom Karmel uses NCVER data on recommencements to estimate individual-based completion rates. It is estimated that around one-quarter of trade apprentices swap…