This report gives some simple examples of stability for one factor and 2 x 2 factorial analysis of variance, reliability and correlations. The findings are very different: from superstability (no transformation whatsoever can change the result) to almost total instability. This is followed by a discussion of applications to multivariate analysis,…

The sampling designs and procedures used by the National Assessment of Educational Progress in its second year assessment activities are documented. The report is organized in three parts. Project objectives and other background information are discussed in the first section. The details of the second year school and household samples are…

Statistical methods that can be applied in the sequential analysis of multivariate empirical data are provided. Twenty-three specific formulas for use under varying conditions are discussed. A historical sketch of sequential analysis since World War II and a bibliography are included. (AE)

The fourth of a series of reports on the study, Mental Retardation in a Canadian Province, the document covers the initial months of field data gathering in Prince Edward Island, April to September 1969. The major objectives of the study, to describe and explore the most suitable definition of retardation for a Canadian population and to report on…

A single issue of Nuclear Science Abstracts, containing about 2,300 abstracts, was indexed by Universal Decimal Classification (UDC) using the Special Subject Edition of UDC for Nuclear Science and Technology. The descriptive cataloging and UDC-indexing records formed a computer-stored data base. A systematic random sample of 500 additional…

Discriminant analysis is reviewed in terms of: (1) formulations, (2) interpretations, (3) uses, (4) issues and problems in applications, (5) recent developments and conceptualizations, and (6) general references and computer programs. Four aspects of a discriminant analysis are considered. They are: (1) separation: determining intergroup…

The adequacy of a test developed for statewide assessment of basic mathematics skills was investigated. The test, comprised of multiple-choice items reflecting a series of behavioral objectives, was compared with a more extensive criterion measure generated from the same objectives by the application of a strict item sampling model. In many…

This document contains data obtained from a pretest survey conducted to test the applicability of the instrument and the suitability of procedures to be used in the survey of secondary-level course offerings and enrollments during the 1972-73 school year. The last comprehensive survey of this nature was taken during the 1960-61 school year. The…

An influential statistics test recommends a Levene text for homogeneity of variance. A recent note suggests that Levene's test is upwardly biased for small samples. Another report shows inflated Alpha estimates and low power. Neither study utilized more than two sample sizes. This Monte Carlo study involved sampling from a normal population for…

A study examined the feasibility of developing a cost effective sampling technique which would estimate the mean number of patrons using the Purdue University General Library during one semester. The technique employed, called random sampling without replacement, meant that, from the total population of days in the Fall Semester, particular days…

This document is the last in a three-part of monographs on the career plans of college graduates. It presents analyses of 1965 and 1970 post-senior year plans based on data collected by the American Council on Education (ACE) as part of the Cooperative Institutional Research Program (CIRP). Through this program, each year's entering freshmen class…

The present research was initiated to investigate whether item-sampling as a procedure would yield a more accurate and stable index of student achievement during formative evaluation when compared to indices arrived at by the traditional method of assessing pupil knowledge and understandings within the framework of multiple choice testing for…

Investigates how student ability, anxiety level, question wiseness, and relative difficulty of questions influence students' opinions of and performance on a chemistry examination. Examines strategies employed by students in selecting questions. Concludes that the major problem for test candidates is anxiety. (Author/DB)

Uses data from a longitudinal study of drug abuse in adolescence to discuss strategies in the study of transitions into various developmental stages. Compares advantages and disadvantages of strategies based on a decomposed sample with strategies based on a pooled sample. (Author/AV)

Examines the reliability and validity of the scores of diverse informants from the Child's Report of Parental Behavior Inventory (CRPBI). Also considers the utility of aggregating scores of parental behavior derived from multiple observers. CRPBI items were adapted to obtain mother's, father's, sibling's, and subject's ratings of parental behavior…