This paper presents the finding of an investigation for determining course achievement utilizing the statistical technique of path analysis. (Author)

Participants in the D-19 symposium on aquatic sampling and measurement for water pollution assessment were informed that determining the extent of waste water stream pollution is not a cut and dry procedure. Topics discussed include field sampling, representative sampling from storm sewers, suggested sampler features and application of improved…

A procedure for testing heterogeneity of variance is developed which generalizes readily to complex, multi-factor experimental designs. Monte Carlo studies indicate that the Z-variance test statistic presented here yields results equivalent to other familiar tests for heterogeneity of variance in simple one-way designs where comparisons are…

Designs for sequential sampling procedures that adapt to cumulative information are discussed. A familiar illustration is the play-the-winner rule in which there are two treatments; after a random start, the same treatment is continued as long as each successive subject registers a success. When a failure occurs, the other treatment is used until…

Two investigations examined whether incentives increase the number of survey returns from former students and whether ideographic characteristics, incentives, and multiple mail-outs influence the perceptions of respondents. Survey responses of 125 (Study 1) and 67 (Study 2) baccalaureate graduates in education were used. The survey included 43…

To determine how many occurrences of a syntactic structure are necessary to provide sampling reliability, two one-half hour spontaneous language samples were elicited from each of 15 language disordered students (5 to 6 years old). Sessions were divided into two periods, one for the child's telling about pictures and toys and the other for…

A special sampling procedure for collecting health statistics and related information from a representative sample of migrant farmworkers was developed for the New York Migrant Health Interview Survey conducted in Wayne County during the summer of 1982. A three-stage, stratified random sampling technique was used. The primary sampling units were…

The reconstructive approach deals with problem solving in the social studies and particularly with the formulation of policy questions which would be examined with respect to their desireability and feasibility. In this article the author rebuts criticism of his handbook outlining the reconstructivist model for inquiry. (JH)

The present study was addressed to the group AOV situation. Onte Carlo methods were employed to contrast several procedures with respect to a. ) control over Type 1 errors and b. ) power. (Editor)

This study investigated differences between WISC Full Scale IQs obtained on mentally retarded adolescents during their fifteenth year of age and WAIS Full Scale IQs obtained after their sixteenth birthday using both the eleven subtest WAIS and several abbreviated forms of the WAIS. (Editor)

25 nine year old children from the Outer Islands of Orkney were compared with a matched group of 25 children from Kirkwall in order to find out whether any differences existed in the development of geographical and spatial concepts as well as country and nationality. (Editor/RK)

The purpose of this study was to help determine optimum item sampling plans for use in school evaluation projects. (Author)

The problem of demonstrating replicability of factor structure across random variables is addressed. Procedures are outlined which combine the use of random subsample replication strategies with the correlations between factor score estimates across replicate pairs to generate a coefficient of replicability and confidence intervals associated with…