Inference is considered for the marginal distribution of "X" when ("X", "Y") has a truncated bivariate normal distribution. The "Y" variable is truncated, but only the "X" values are observed. A sample of 87 Otis test scores is shown to be well described by this model. (SLD)

Details the use of the game Yahtzee with modified rules to help students understand the extreme improbability of obtaining complex structures by chance in the process of evolution. Includes a discussion of probability calculations. (DDR)

Discusses information retrieval systems and the need to have them adapt to user needs, integrate information in any format, reveal patterns and trends in information, and answer questions. Topics include statistics and probability; natural language processing; intelligent agents; concept mapping; machine-aided indexing; text mining; filtering;…

Presents a game in which if player is playing a match of this game with an opponent, at each step in the game he has to decide whether to continue or to stop. Helps students to develop a strategy for making such a decision based on the expected gain and related probabilities. (Author/ASK)

Presents an activity on probability and area in which students try to decide which door to buy. (ASK)

Discusses the performance of Malaysian secondary school students on a probability concepts test covering various intuitive and taught probability concepts. Describes the establishment of a probability concepts hierarchy and considers probability understanding in relation to independent variables. Boys, Form Six students, and students with a higher…

An investigation of the use of probabilistic methodologies for identifying cheaters on classroom multiple-choice examinations concludes that imperfections in the detection techniques, coupled with legal issues, necessarily limit the applicability and utility of these strategies. (Author)

Presents an instrument designed as a profile of teacher achievement and teacher needs with regard to the probability and statistics strands in the mathematics curriculum. Discusses uses for the instrument and further development possibilities. (MM)

We studied the choice behavior of 2 monkeys in a discrete-trial task with reinforcement contingencies similar to those Herrnstein (1961) used when he described the matching law. In each session, the monkeys experienced blocks of discrete trials at different relative-reinforcer frequencies or magnitudes with unsignalled transitions between the…

This article offers a five-level variable that highlights the level and the consistency of a student's educational "anticipations," and tests the explanatory power of this approach to the histories of traditional age community college students using the postsecondary transcript files of the NELS:88\2000 longitudinal study. In logistic…

Background: Research has shown that a large proportion of adolescents with symptoms of depression and substantial distress or impairment fail to meet the diagnostic criteria for a major depressive disorder (MDD). However, many of these undiagnosed adolescents may meet criteria for a residual category of the "Diagnostic and Statistical Manual of…

A traditional method of localizing brain functions has been to identify shared areas of brain damage in individuals who have a particular deficit. The rationale of this "lesion overlap" approach is straightforward: if the individuals can no longer perform the function, the area of brain damaged in most of these individuals must have been…

Objective: This study uses results from a large community survey to examine the relationship between a history of child maltreatment and self-reports of contact with Child Protection Services (CPS). Methods: The Ontario Health Supplement was a province-wide, probability-based survey of household dwellings in the province of Ontario, Canada. A…

Statistics textbooks for undergraduates have not caught up with the enormous amount of analysis of Internet data that is taking place these days. Case studies that use Web server log data or Internet network traffic data are rare in undergraduate Statistics education. And yet these data provide numerous examples of skewed and bimodal…

In order to meet two key objectives, enrollment managers at colleges and universities make extensive use of single equation probability models. The first objective is to generate sufficient financial resources to educate the students enrolled. The more dependent the institution is on tuition revenues, the more important is this objective. The…