Presents two statistical topics and examples of their use in natural resource monitoring. The first topic deals with use of correlated observations in calculations of variance estimates for a regional mean, required sample size determination, and confidence intervals. The second topic concerns the use of Bayesian techniques in hypothesis testing.…

An elementary mathematical model is used to analyze tuition and privatization policies for higher education institutions. One finding is that an appropriate tuition can increase the social income of alumni. Another salient finding is that some of the model's results are counterintuitive, suggesting its utility in decision making. Methodological…

This article describes activities for developing an understanding of a formula for calculating the volume of a rectangular prism. The core activity concerns determining the volume of water in a backyard skating rink. (Contains 4 figures.)

The Teacher Load Index, a simplified method of comparing the teaching load of individuals in the California junior and community colleges, is presented in this report. First, the load measurement problem is addressed, revealing the inadequacies of the Credit Unit and the Weekly Student Contact Hour systems for measuring teacher load. Then, a…

This document describes mathematical programs on the basic concepts of algebra produced by Louisiana Public Broadcasting. Programs included are: (1) "Inverse Operations"; (2) "The Order of Operations"; (3) "Basic Properties" (addition and multiplication of numbers and variables); (4) "The Positive and Negative…

In recognition of the fact that young children develop informal number concepts and strategies for solving several basic types of verbal addition and subtraction problems before entering school, but lose this ability after a few years of schooling, the study created and tested an intervention designed to build on the children's early insights. A…

This research is aimed at diagnosing the problem-solving skill of elementary school children and subsequently improving their competence in early mathematics. To reach this goal, a computer assisted instruction (CAI) program on open sentences, incorporating knowledge about students' problem solving strategies and misconceptions, was constructed.…

Several approaches to determining a new formula for the allocation of faculty positions (and associated salary and operating funds) are discussed. These approaches are: weighting schemes used at peer institutions, faculty workload measures, and use of a state funding formula. A survey was used to solicit data concerning weighting schemes used at…

A statistical model is presented for analyzing the results of group conversation tests in English, developed in a Finnish university study from 1977 to 1981. The model is illustrated with the findings from the study. In this study, estimates of percentile curves for the number of errors are of greater interest than the mean regression line. It was…

In the framework of a curriculum reform in the Netherlands, an interdisciplinary open inquiry assignment has been introduced as a part of the final secondary school examinations. We developed and evaluated a preparatory open inquiry assignment to be used in science and mathematics departments of schools, in collaboration with each other: the…

Formula budgeting for college and university facilities maintenance is recommended because: (1) formulas inject objectivity into the budgeting process by using quantified data; (2) formulas tend to improve the equitability of treatment of comparable institutions; (3) formulas are intended to provide adequate but economical budgets; and (4)…

This guide explains the concept of out-of-level testing and suggests a formula for estimating the occurrence of floor effects and ceiling effects, within the context of models for evaluating Elementary Secondary Education Act (ESEA) Title I programs. An analogy explains floor and ceiling effects as if test items are stored in different levels in a…

A state-level library acquisitions model is described, and the results of a two-year implementation by Colorado appropriating agencies are analyzed. The model was developed to address two problems: (1) determining library collection standards for each campus; and (2) presenting campus acquisition needs in a way that differentiated campus roles and…

The use of data on longitudinal student attendance patterns to determine variances, and hence confidence bounds, on student enrollment forecasts, in addition to finding the forecasts themselves, is demonstrated. The formulation of the enrollment model based on longitudinal student attendance patterns is described step by step, presenting the…

Procedures for determining cutting scores have been proposed by Angoff and by Nedelsky. Nedelsky's approach requires that a rater examine each distractor within a test item to determine the probability of a minimally competent examinee answering correctly; whereas Angoff uses a judgment based on the whole item, rather than each of its components.…