Thirty-three children treated for congenital hyperinsulinism (CHI) (13 boys; 13 with focal forms of CHI, median age 10 months) entered the study. The mothers were requested to fill-in the Ages and Stages Questionnaire to estimate communication, gross motor, fine motor, problem solving and personal-social skills. Children with focal forms had…

In this paper we use historic score-reporting records and test-taker metadata to inform data-driven recommendations that support international students in their choice of undergraduate institutions for study in the United States. We investigate the use of Structural Topic Modeling (STM) as a context-aware, probabilistic recommendation method that…

Recent years have seen a growing number of studies investigating the accuracy of nonprobability online panels; however, response quality in nonprobability online panels has not yet received much attention. To fill this gap, we investigate response quality in a comprehensive study of seven nonprobability online panels and three probability-based…

In this article, we first analyze the situation of statistics education in Brazil, within an international context of interest for this discipline. Secondly, we aim to answer the following research question: How has doctoral research in statistics, probability, and combinatorics education evolved in Brazil? For this purpose, we analyzed the…

Aim/Purpose: The study examined how the developed mobile courseware can be used as instructional material to improve senior high school statistics and probability learning, particularly during distance learning caused by the COVID-19 pandemic. The study also aims to assess the gamified mobile courseware's engagement, functionality, aesthetics, and…

We consider here two questions posed by first-year undergraduate students in a statistics tutorial session. These questions are related, and each concerns an aspect of independence in probability. The notion of independence does tend to be a little less intuitive than some of the other elementary probabilistic concepts, thereby providing students…

Count responses with grouping and right censoring have long been used in surveys to study a variety of behaviors, status, and attitudes. Yet grouping or right-censoring decisions of count responses still rely on arbitrary choices made by researchers. We develop a new method for evaluating grouping and right-censoring decisions of count responses…

The Canadian government implemented the child care expense deduction in 1972, a policy initiative intended to offset the financial cost of child care for eligible families. Although the deduction has now been in place for almost 50 years, and almost half of all families with a child aged 0--14 years use child care (Sinha, 2014), little research…

Two experiments were designed to investigate the developmental trajectory of children's probability approximation abilities. In Experiment 1, results revealed 6- and 7-year-old children's (N = 48) probability judgments improve with age and become more accurate as the distance between two ratios increases. Experiment 2 replicated these findings…

Extreme response style is the tendency of individuals to prefer the extreme categories of a rating scale irrespective of item content. It has been shown repeatedly that individual response style differences affect the reliability and validity of item responses and should, therefore, be considered carefully. To account for extreme response style…

In Egypt, the curricula delay in updating and stagnation behind modern educational trends represents a challenge, which may hinder education quality. Hence, to respond to such a national challenge, there is a need to review the curricula in light of modern educational trends, particularly in the case of probability where it has emerged as a…

Children and adults appreciate that physical action is typically the conduit between individuals' desires and the fulfillment of those desires. However, certain forms of petitionary thought -- e.g., wishing and praying -- are believed by many people to influence the external world and fulfill desires without direct physical action. We examine…

Presidential elections can be forecast using information from political and economic conditions, polls, and a statistical model of changes in public opinion over time. However, these "knowns" about how to make a good presidential election forecast come with many unknowns due to the challenges of evaluating forecast calibration and…

This paper investigated the determinant of youth participation in agricultural training programs using the case of Fadama program. A multi-stage sampling technique was used to select a total of 977 respondents comprising of 455 participants and 522 non-participants. Data collected were analyzed using descriptive and inferential statistics. The…

Although collecting data from multiple informants is highly recommended, methods to model the congruence and incongruence between informants are limited. Bauer and colleagues suggested the trifactor model that decomposes the variances into common factor, informant perspective factors, and item-specific factors. This study extends their work to the…