The number of increases a particular stock makes over a fixed period follows a Poisson distribution. This article discusses using this easily-found data as an opportunity to let students become involved in the data collection and analysis process.

This study aims to evaluate a multidimensional latent trait model to determine how well the model works in various empirical contexts. Contrary to the assumption of these latent trait models that the traits are normally distributed, situations in which the latent trait is not shaped with a normal distribution may occur (Sass et al, 2008; Woods…

This meta-analysis reviewed 144 studies from 1996 to 2013 using the Beck Depression Inventory-Second Edition. Internal consistency was 0.89 and test-retest reliability 0.75. Convergent comparisons were robust across 43 depression instruments. Structural validity supported both one- and two-factor solutions and diagnostic accuracy varied according…

The Office of English Language Acquisition (OELA) has synthesized key data on English learners (ELs) into two-page PDF sheets, by topic, with graphics, plus key contacts. This Fast Facts covers data in the following categories: (1) States, Including D.C., with the Highest Concentration of ELs Who Are Black; (2) States, Including D.C., with the…

The Office of English Language Acquisition (OELA) has synthesized key data on English learners (ELs) into two-page PDF sheets, by topic, with graphics, plus key contacts. The topics for this report on English Learners (ELs) Who Are American Indian and/or Alaska Native (AI/AN) include: (1) States With the Highest Percentage of ELs Who Were AI/AN:…

This study aimed to determine the opinions of high school students relating to time management and present a correlation of their time management skills with demographic variables, as well as examining the relation between their level of research anxiety and time management skills. The study group composed 270 12th-grade students (127 males and…

Upward mobility is a prized aspect of the American dream based upon the belief that those from humble origins can climb the socioeconomic ladder through education and hard work. Increasingly, postsecondary education is an essential component of that dream. However, many students, particularly those from low to moderate income families, find it…

The Office of English Language Acquisition (OELA) and Office of Early Learning (OEL) has synthesized key data on English learners (ELs) and early learning into two-page PDF sheets, by topic, with graphics, plus key contacts. The topics for this report include: (1) State-funded preschool programs with highest percentage of ELs: Fall 2013; (2)…

This paper introduces the generalized beta (GB) model as a new modeling tool in the educational assessment area and evaluation analysis, specifically. Unlike normal model, GB model allows us to capture some real characteristics of data and it is an important tool for understanding the phenomenon of learning. This paper develops a contrast with the…

This article explores an example in finances in order to motivate the random variable learning to the very beginners in statistics. In addition, it offers a relationship between standard deviation and range in a very specific situation.

Two methods are currently in use at Educational Testing Service (ETS) for equating observed item difficulty statistics. The first method involves the linear equating of item statistics in an observed sample to reference statistics on the same items. The second method, or the item response curve (IRC) method, involves the summation of conditional…

Science education research emphasizes the irreplaceable value of textbooks in students' acquisition of scientific knowledge. Illustrations such as diagrams contained in science books are crucial modes of visual representations that facilitate learners' conceptual learning. Through classifying, coding, and analysing diagrams from twenty science…

Band and choral preservice teachers (N = 44) studied band and choral scores, listened to recordings of school ensembles, and identified errors in the recordings. Results indicated that preservice teachers identified significantly more errors when listening to recordings of their primary area (band majors listening to band, p = 0.045; choral majors…

Using a data set exclusively prepared for and licensed to them by the College Board, the authors examined the growth of the Advanced Placement program in foreign languages and overall trends in regard to the number of candidates who sat for the foreign language exams, their gender, their scores, and their ethnicity over the 36-year period covering…

Rapid growth of Advanced Placement (AP) exams in the last 2 decades has been paralleled by national enthusiasm to promote availability and rigor of science, technology, engineering, and mathematics (STEM). Trends were examined in STEM AP to evaluate and compare growth and achievement. Analysis included individual STEM subjects and disaggregation…