This paper reports on students' experiences of describing and representing variation in hypothetical data. Fifty-six students (8-9 years-old) experienced collecting and working with quantitative data for two years as part of a STEM education project. The task described here was an end-of-year survey question, with three parts about a hypothetical…

National failure rates seen in undergraduate introductory CS courses are quite high. In this paper, we develop a predictive model for student in-class performance in an introductory CS course. The model can serve as an early warning system, flagging struggling students who might benefit from additional support. We use a variety of features from…

This paper explores the impact on teachers' self-efficacy to teach statistics from a graduate course aimed to develop teachers' knowledge of inferential statistics through engaging in data analysis using technology. This study uses qualitative and quantitative data from the Self-Efficacy to Teach Statistics Survey (Harrell-Williams et al., 2013)…

When respondents fail to use response scales of survey questionnaires as intended, latent variable modeling of data can produce disordered category thresholds. The objective of this paper is to show the usefulness of the Rasch modeling features to explore different ways of collapsing categories so that they are properly ordered and fit for further…

Educational reform is not easy. As school leaders search for a format that leads to improvement on many fronts concurrently, data teams is one such promising practice. The data team design not only involves sensemaking of data as evidence of effective teaching and learning, but also builds a professional learning community, distributes leadership,…

A survey was conducted to compare the informal workplace learning (IWL) experiences of three professional groups (information technologists, school teachers, and HRD professionals). Data analysis found that the three groups use interactive more than independent IWL activities. Five environmental factors inhibited engagement and nine personal…

Work performed during the 1978-1980 SAGE contract to develop improved national estimates from survey data is reported. Three areas of effort are covered in this paper: (1) the use of longitudinal merges combined with relational edits to detect reporting or encoding errors; (2) the use of longitudinal merges together with special follow-up surveys…

This paper helps researchers develop criteria for conducting surveys. Cost considerations frame the paper's suggestions. Specifically, the text advises that researchers consider the human and material resources needed, type of survey instrument, medium for conducting the survey (mail, telephone, personal interview, etc.), data analysis…

This paper discusses three software packages that offer unique features and options that greatly simplify the research package for conducting surveys. The first package, EPSILON, from Resource Group, Ltd. of Dallas (Texas) is designed to perform a variety of sample size calculations covering most of the commonly encountered survey research…

A methodological approach that emerged during the design of task-specific research rubrics to code large sets of open-ended survey data fills the void in scholarship about developing rubrics for research purposes. A brief rationale for using this method rather than other, often-used, data analysis methods is provided, with a description of the…

Evaluators who perform formative evaluations would be well served to apprise themselves of recent survey research in framing formative evaluations. Illustrative examples are used from research into such diverse areas of activity as: the development of identities attached to different forms of modern rock and roll; the rationales that juvenile…

Using qualitative and quantitative methods in a single research project has been the subject of controversy. Purists argue that qualitative and quantitative approaches derive from different, mutually exclusive epistemologic and ontologic assumptions, and cannot be combined. Situationalists focus on methodology and assume that data collection and…

This paper investigates the utility of various procedures used to locate and interview veterans as part of a longitudinal research study being conducted for the Department of Defense. The populations are comprised of below entry aptitude standards males who entered the military during the late 1960s, and potentially ineligibles who entered between…

APL (A Programing Language), a computer language used thus far largely for mathematical and scientific applications, can be used to tabulate a survey. Since this computer application can be appreciated by social scientists as well as mathematicians, it serves as an invaluable pedagogical tool for presenting APL to nonscientific users. An…

Differential item functioning (DIF), or item bias, occurs when individuals in a focal group respond differently to a test item than do individuals in a reference group even when comparisons are restricted to individuals with similar overall skill levels on the trait in question. It is common in constructing a questionnaire or survey to recommend…