The use of multiple regression in identifying students with learning disabilities was investigated with 281 ninth grade students. Five sets of predictor variables were chosen to predict grade point average in grade 9: verbal and nonverbal IQ, sex, socioeconomic status (SES), and grade point average in grade 7. Five groups of overachievers, normal…

The uses and restrictions of commonality analysis are described. Commonality analysis has been increasingly used as a method to examine the relative importance of independent variables, through the partitioning of variance among the variables of the regression equation into unique and common components. The effects of all other independent…

A project to determine if a causal relationship exists between attitude and achievement in understanding metric concepts is described. The subjects of the project were inservice teachers. The answer to two questions were sought: Does a positive significant correlation exist between initial attitude and achievement? Does a significant difference…

The primary objective of this paper is to describe a method of estimating female-male wage ratios. The estimating technique presented is two stage least squares (2SLS), in which equations are estimated for both men and women. After specifying and estimating the wage equations, the male-female wage differential is calculated that would remain if…

This study used linear models developed by stepwise multiple regression to examine the relationship between performance at the United States Air Force Academy Preparatory School and subsequent grade point average (GPA) at the USAF Academy. Data collected on Prep School graduates in the Academy classes of '71 through '77 who had completed at least…

This study predicts gymnastic performance, arousal, and anxiety measures from past performances. Pulse rate and the Palmar Sweat Index were utilized as indicants of arousal. Anxiety was assessed by means of the State-Trait Anxiety Inventory. Eighteen members of the Ithaca College women's varsity gymnastic team were tested throughout the 1973-74…

A statistical analysis of data on Michigan, New York City, New York state, and Project Talent schools found evidence of schools that consistently produce outstanding students even after allowance is made for the different initial endowments of their students and for chance variation. Methodologically, like many previous studies, this report uses…

The interrelationships between aptitude test performance and certain demographic-cultural variables were investigated, as well as the relationship between these variables and the aptitude test factor content. Five test batteries were administered to groups of approximately 1,900 subjects each. Multiple regression analyses indicated that there were…

A set of mathematical consistencies that forms conditions of inequality in a theorem is summarized, and a strategy for its application with real data is presented. The theorem and strategy are suggested for immediate use by the practitioner seeking cause-effect relationships in a system of variables to cut down guess work and time in analysis and…

Multiple regression analysis was employed to determine three variables which best correlate with circulation: number of books added, full-time equivalent size of student body, and undergraduate and graduate courses offered. A regression equation recommending a predictive value for the number of books to be added was developed; data tables are…

The controversy surrounding regression methods for unbalanced factorial designs is addressed. The statistical hypotheses being tested under the various methods, as well as salient issues in the use of these methods, are discussed. The use of statistical computer packages is also discussed. (Author/JKS)

Two computer programs (one batch, one interactive) are designed to provide statistics for a weighted linear combination of several component variables. Both programs provide mean, variance, standard deviation, and a validity coefficient. (Author/JKS)

Examines the impact of formal collective negotiations on six levels of the Illinois teacher salary schedule in the absence of comprehensive bargaining legislation. Results indicate a significant positive relationship between negotiations and teacher salary levels attributable to negotiation activity. (Author/IRT)

Black male and white female managers were perceived as exhibiting more consideration behavior than white male managers do. (Author)