The purpose of this study was to compare the results of an analysis of covariance design to a method developed by the authors called within-class regression. Application of this statistical method can be to any quasiexperimental design with a large number of groups. A test of statistical significance to use with the within-class regression…

To examine and clarify background conditions for understanding variables which affect salary, the salary and compensation programs at two industrial and three educational organizations were subjected to a statistical audit. Data were available on 272 employees. Ten compensation variables were studied as having direct or indirect effects on salary:…

A procedure for assessing content-area and total-test dimensionality which uses response function discrepancies (RFD) was studied. Three different versions of the RFD procedure were compared to Bejar's principal axis content-area procedure and Indow and Samejima's exploratory factor analytic technique. The procedures were compared in terms of the…

The TESTFACT computer program and full-information factor analysis of test items were used in a computer simulation conducted to correct for the guessing effect. Full-information factor analysis also corrects for omitted items. The present version of TESTFACT handles up to five factors and 150 items. A preliminary smoothing of the tetrachoric…

The tests for zero partial association in a multiple contingency table have gained new importance with the introduction of graphical models. It is shown how these may be performed as exact conditional tests, using as test criteria either the ordinary likelihood ratio, the standard x squared statistic, or any other appropriate statistics. A…

This study was undertaken to identify the differences between asthmatic and nonasthmatic children, ages nine through twelve, on self-concept and attitudes toward physical education. It was anticipated that children having an asthmatic condition might reflect significantly different scores from their nonasthmatic peers at least partially…

Growth of administrative components in 43 K-12 public school districts in the Saint Louis metropolitan area is reported for 1968-76. Increases in absolute numbers and ratios of administrators to teachers occurred in school districts with increasing as well as declining enrollments. Statistical analysis of public records and interviews with…

The six studies reported on here sought to determine if patterns of behaviors could be determined in the verbal and nonverbal communications of teachers toward pupils, and if there were differences in these patterns when such variables as sex, race, ability, age, and socioeconomic status were considered. Videotapes of over 100,000 teacher/pupil…

The technical problems involved in obtaining Bayesian model estimates for the regression parameters in m similar groups are studied. The available computer programs, BPREP (BASIC), and BAYREG, both written in FORTRAN, require an amount of computer processing that does not encourage regular use. These programs are analyzed so that the performance…

Problems and procedures in assessing and obtaining fit of data to the Rasch model are treated and assumptions embodied in the Rasch model are made explicit. It is concluded that statistical tests are needed which are sensitive to deviations so that more than one item parameter would be needed for each item, and more than one person parameter would…

Georgia's equalization aid program, intended to meet the varying needs of pupils around the state, does not take into account variations in resource costs between districts. This study, introduced by a review of previous research on the topic, was designed to analyze the impact of these variations in resource costs on equality of educational…

This study was designed to measure preservice teachers' confidence concerning interdisciplinary strategy, competence in using science as a content vehicle for teaching Reading/Language Arts (R/LA), and knowledge of components critical for integrating science and R/LA instruction. Elementary and/or special education juniors and seniors from three…

On the basis of past research efforts to improve multiple-choice test information through differential weighting of responses to wrong answers (distractors), two statistical indices are developed. Each describes the properties of response distributions across the options of an item. Jaspen's polyserial generalization of the biserial correlation…

Various studies have been conducted to inductively locate the aspects of occupation in one generation which are transmitted to the next generation as found in corresponding aspects of their labor force aspirations and entry levels. This study restricted attention to intergenerational covariation in components of roles rather than to the structural…

Two methods were used to project college and university enrollment in South Carolina: the age ratio method, which correlates college attendance with the population of traditional college age; and the cohort survival method, using historical data on the progression of students from high school to and through college. The projections indicate that…