Repeated sampling approaches to inference that rely on simulations have recently gained prominence in statistics education, and probabilistic concepts are at the core of this approach. In this approach, learners need to develop a mapping among the problem situation, a physical enactment, computer representations, and the underlying randomization…

The purpose of the study was to analyze and compare the job satisfaction with twenty dimensions of male and female higher secondary school heads in Khyber Pakhtunkhwa. A total of 108 higher secondary school heads were selected from eleven districts as sample through multi-stage sampling technique in which 66 were male and 42 were female. The study…

Purpose: Sentence processing can be affected following a traumatic brain injury (TBI) due to linguistic or cognitive deficits. Language-related event-related potentials (ERPs), particularly the P600, have not been described in individuals with TBI history. Method: Four young adults with a history of closed head injury participated. Two had severe…

Cluster randomized experiments are ubiquitous in modern education research. Although a variety of modeling approaches are used to analyze these data, perhaps the most common methodology is a normal mixed effects model where some effects, such as the treatment effect, are regarded as fixed, and others, such as the effect of group random assignment…

In this case study, I describe my experiences as a novice researcher in conducting focus groups with high school students to learn about their participation in a high school dropout prevention program. The dropout prevention program was a partnership among the high school, the local state university, and the Phoenix Suns of the National Basketball…

Large-scale experiments that involve nested structures may assign treatment conditions either to subgroups such as classrooms or to individuals such as students within subgroups. Key aspects of the design of such experiments include knowledge of the variance structure in higher levels and the sample sizes necessary to reach sufficient power to…

People are capable of imagining and generating new category exemplars and categories. This ability has not been addressed by previous models of categorization, most of which focus on classifying category exemplars rather than generating them. We develop a formal account of exemplar and category generation which proposes that category knowledge is…

A research on primary school education in the frame of education for sustainable development, as known as ESD, is important because the awareness of eco-friendly activities and environment empowerment cannot be developed in a short time. Meanwhile, human activities have caused significant environmental degradation. This is an exploratory study…

Team building leadership skills are important to understandings of how the primary school administrators might work towards creating more effective teamwork in the school. This research aimed 1) to study the components of team building leadership skills needed for primary school administrators, 2) to examine the current states and desirable…

This study describes how students' intuitions about sampling are informed by extended experiences in investigating local ecosystems. Elementary students in a rural/suburban district in the upper midwest spent a year conducting first-hand comparative field studies of nearby ponds, prairies, and forests. At the close of the term, we conducted…

This study examined problems of improvisation of instructional materials in Social Studies by pre-service teachers in Ekiti State University. The population for the study comprised all Social Studies pre-service teachers in the Faculty of Education. The sample consisted of 90 Social Studies pre-service teachers selected from 200, 300 and 400…

Some examination candidates submit their scripts first, sometimes, for recognition as being brilliant, and some do for not knowing what to write. However, some equally submit last because they want to dot i's and cross t's. The objective of this research is to compare the results of both the earliest and latest submissions with the aim of finding…

Online purposive samples have unknown biases and may not strictly be used to make inferences about wider populations, yet such inferences continue to occur. We compared the demographic and drug use characteristics of Australian ecstasy users from a probability (National Drug Strategy Household Survey, n = 726) and purposive sample (online survey…

This research investigates what students' use of statistical language can tell us about their conceptions of distribution and sampling in relation to informal inference. Prior research documents students' challenges in understanding ideas of distribution and sampling as tools for making informal statistical inferences. We know that these…

The Whites Writing Whiteness project is concerned with changes to the racial order in South Africa over a long time-period and connects 'big numbers' and work on very large archive collections with close textual analysis of particular documents. It uses longitudinal data within a Qualitative Longitudinal Research methodological approach, combining…