Some aspects of simultaneous tests for means are reviewed. Specifically, the comparison of univariate or multivariate normal populations based on the values of the means or mean vectors when the variances or covariance matrices are equal is discussed. Tukey's and Dunnett's tests for multiple comparisons of means, Scheffe's method of examining…

When examining a repeated measures design with independent groups for a significant group by trial interaction, classical analysis of variance or multivariate procedures can be used if the assumptions underlying the tests are met. Neither procedure may be justified for designs with small sample sizes and dichotomous dependent variables. An omnibus…

This paper discusses the theory and presents examples of free-association norms. Examples from several categories of free-association data are given. Their use in experiments on cultural characteristics of the associative structures of words are also explained. A graph of the relationship between primary and secondary associations and tables of…

The evaluation model for mastery testing as proposed by Emrick (1971) represents an empirical approach to determining the most appropriate mastery criterion score that should be established in those testing situations which entail decision making relative to the continued progression or possible recycling of students in a given learning sequence.…

Latent trait test score theory is discussed primarily in terms of Birnbaum's three-parameter logistic model, and with some reference to the Rasch model. Equations and graphic illustrations are given for item characteristic curves and item information curves. An example is given for a hypothetical 20-item adaptive test, showing cumulative results…

The number of students expected to enroll in Montgomery College yearly through 1985 is projected on the basis of a model incorporating past trends, population projections, economic indicators, and other factors on which viable assumptions about the future can be based, into a system of linear equations expressed in matrix notation. The model…

Through Monte Carlo procedures, three different techniques for estimating the parameter theta (proportion of the "shocks" remaining in the system) in the Integrated Moving Average (0,1,1) time-series model are compared in terms of (1) the accuracy of the estimates, (2) the independence of the estimates from the true value of theta, and…

Formal proofs are given of the effectiveness under well-defined conditions of the thesaurus method in information retrieval. It is shown, in particular, that when certain semantically related terms are added to the information queries originally submitted by the user population, a superior retrieval system is obtained in the sense that for every…

This paper provides a broad reexamination of the correlates of faculty age, incorporating several measures of research activity and other related professional achievement variables. The data are derived from a large-scale, nationally representative survey of college and university faculty members; analyses are based on a subsample of all doctorate…

Models for multidimensional scaling use metric spaces with additive difference metrics. Two important properties of additive difference metrics are decomposability and intradimensional subtractivity. A prediction was derived from these properties and tested experimentally. Eleven non-psychology students were used as subjects. Rectangles varying in…

An operations research method to optimize the teaching-learning process is introduced in this paper. In particular, a linear programing model is proposed which, unlike dynamic or control theory models, allows the computer to react to the responses of a learner in seconds or less. To satisfy the assumptions of linearity, the seemingly complicated…

This proceedings volume of a seminar on planning library services is the third in a series of papers, published at irregular intervals, to report on research work by members of the University of Lancaster library staff. From January 1967 until June 1969 the Office of Scientific and Technical Information (OSTI) organized regular meetings under the…

Consideration of computer-assisted instruction in the classroom has led to an analysis of the educational process including the need for developing more adequate models of the learning processes and increased attention to the function of the teacher (human or computer) as a decision maker. Given a descriptive model of the learning process, it is…

The augmented transition network described in this report was developed in the course of work in semantic interpretation in the context of a computer system which answers English questions. In order to provide mechanical input for the semantic interpreter, a parsing program based on the notion of a "recursive transition network grammar" was…

Ten highly motivated and above-average intermediate algebra students were selected to complete a ten-week schedule of activities involving the mathematizing of some physical representation of a phenomena and the studying of that model. Ten activity-based exercises, most adapted from LABORATORY MANUAL FOR ELEMENTARY MATHEMATICS by Fitzgerald, et…