Enzymes are nature's catalysts, mediating chemical processes in living systems. The study of enzyme function and mechanism includes defining the maximum catalytic rate and affinity for substrate/s (among other factors), referred to as enzyme kinetics. Enzyme kinetics is a staple of biochemistry curricula and other disciplines, from molecular and…

One purpose for combining research studies is to estimate a population treatment effect. The internal validity of a model for how effect size estimates should be computed and combined will hinge upon the homogeneity of the effect size variation. Effect size variation may be assessed in the form of a summary fit statistic, and a direct…

The technique developed in this research paper for analyzing the information in charts and graphs is designed to reveal design flaws in the display that may prevent them from conveying information effectively. This analytic scheme requires isolating four types of constituents in a display and specifying their structure and interrelations at the…

Techniques of exploratory data analysis (EDA) were used to decompose data tables portraying performance of ethnic groups on the Scholastic Aptitude Test. These analyses indicate the size and structure of differences in performance among groups studied, nature of changes across time, and interactions between group membership and time. (Author/DWH)

Fifty-six teachers of students with moderate/profound disabilities viewed task analytic data in one of three forms: graphed, ungraphed, or both. The data's form did not produce different teacher judgments of student progress or different program recommendations. Three factors (trend, variability, and frequency of data collection) had significant…

Designed to help institutional researchers transform data into useful information, this paper discusses principles for presenting research results to administrators in the top levels of management. The first section describes ten fundamental principles of data presentation: knowing what information is needed; knowing when the information is…

A subset of Statistical Process Control (SPC) methodology known as Control Charting is introduced. SPC methodology is a collection of graphical and inferential statistics techniques used to study the progress of phenomena over time. The types of control charts covered are the null X (mean), R (Range), X (individual observations), MR (moving…

Describes three experiments measuring changes in children's social speech which used the presence or absence of partitions allowing partial visual contact to alter verbal communication contingencies between players. Altered levels of speech and specificity confirm importance of physical environmental factors in regulation of children's play. (MBR)

In the context of the discipline of quality control, this paper identifies many of the tools which may reinvigorate the statistical and graphical toolkits in higher education. Certain statistical and graphical issues are discussed by means of examples and hypothetical situations, and techniques are introduced that have application for the pursuit…

Describes a computerized system which presents objective test items to students, and upon question completion, provides immediate feedback with correct answers and explanations. Use of the system by pharmacology students and an analysis of end-of-year examination results are presented. (Author/MBR)

The focus of this study was on the relationship between visual and statistical analyses of time series data and the degree to which characteristics of the data influenced this relationship. A total of 52 teachers took part in evaluating a series of graphs having prespecified characteristics. The independent variables manipulated included: slope,…

This paper discussed methods currently under study for use with multiple-response data. Besides using Bonferroni inequality methods to control type one error rate over a set of inferences involving multiple response data, a recently proposed methodology of plotting the p-values resulting from multiple significance tests was explored. Proficiency…