The aim of this study is to determine variance difference between maximum likelihood and expected A posteriori estimation methods viewed from number of test items of aptitude test. The variance presents an accuracy generated by both maximum likelihood and Bayes estimation methods. The test consists of three subtests, each with 40 multiple-choice…

Sexual assault on college campuses is persistently underreported; therefore, Clery Act sexual assault statistics are not strong indicators of incidence. Instead, they may indicate whether students feel comfortable reporting on a particular campus. The purpose of this study was to examine the impact of the Office on Violence Against Women Campus…

This study examined the influence of growth-fostering mentoring relationships on the self-esteem of adolescent female students from affluent communities. Studies have demonstrated that this population of students is susceptible to psychological distress and self-esteem problems, due to perfectionistic strivings and achievement pressures.…

This paper presents a non-parametric imputation technique, named random forest, from the machine learning field. The random forest procedure has two main tuning parameters: the number of trees grown in the prediction and the number of predictors used. Fifty experimental conditions were created in the imputation procedure, with different…

Background: The Centers for Disease Control and Prevention (CDC) reports that men have recently experienced a rise in rates of sexually transmitted infections (STIs)--particularly chlamydia, gonorrhea, and syphilis. While STI testing has improved in cost, portability, and accuracy, STI notification still relies on telephone calls. Prompt STI…

We use a longitudinal dataset to explore the effect of fraternity/sorority membership on political orientation and social/political activism. After controlling for a variety of potentially confounding variables, including pretests on the dependent variables, fraternity and sorority members were significantly less liberal that their unaffiliated…

Background: Five-year-olds with specific language impairment (SLI) often struggle with mastering grammatical morphemes. It has been proposed that verbal morphology is particularly problematic in this respect. Previous research has also shown that in young typically developing children grammatical markers appear later in more phonologically…

Inter-rater reliability, commonly assessed by intra-class correlation coefficient ICC, is an important index for describing the extent to which there is consistency amongst two or more raters in assigned measures. In organizational research, the data structure is often hierarchical and designs deviate substantially from the ideal of a balanced…

Recent estimates show nearly 90% of school districts nationwide offer some form of online credit recovery. Despite its widespread adoption, there is a dearth of research surrounding the suitability of online credit recovery for students. This study examined potential success factors of students enrolled in virtual recovery courses in a school…

The use of confidence intervals (CIs) for making a statistical inference is gaining popularity in research communities. To evaluate college statistics instructors' readiness to teach CIs, this study explores their attitudes toward teaching CIs in elementary statistics courses, and toward using CIs in inferential statistics. Data were collected…

Natural languages make prolific use of conventional constituent-ordering patterns to indicate "who did what to whom," yet the mechanisms through which these regularities arise are not well understood. A series of recent experiments demonstrates that, when prompted to express meanings through silent gesture, people bypass native language…

The education of physicists requires annual progress in mathematics through grades K-12, continuing on to high school physics, undergraduate instruction, and often many years of postgraduate study. The traditional domain of physics education research is the study of pedagogical techniques for a single lesson or a single course, but the physics and…

We present an active-learning strategy for undergraduates that applies Bayesian analysis to candy-covered chocolate m&m's®. The exercise is best suited for small class sizes and tutorial settings, after students have been introduced to the concepts of Bayesian statistics. The exercise takes advantage of the nonuniform distribution of…

A sample of 327 engineering bachelor students from a public university in Mexico took part in an information integration study to explore systematic thinking underlying propensity for cheating during a course exam. All study participants were provided with written descriptions of 12 scenarios pertaining to the academic evaluation criteria and were…

Commonly described by psychologists; anxiety is a psychological construct, as a state of apprehension, a vague fear that is only indirectly associated with an object (Scovel, 1991). A small amount of anxiety is believed to be needed for learners since it improves performance which is known as facilitating anxiety. Statistics anxiety is a feeling…