Many statistics educators believe that few students develop the level of conceptual understanding essential for them to apply correctly the statistical techniques at their disposal and to interpret their outcomes appropriately. It is also commonly believed that the sampling distribution plays an important role in developing this understanding.…

Purpose: The purpose of this study was to review research published by Educational Administration Quarterly (EAQ) during the past 10 years to determine if confidence intervals and effect sizes were being reported as recommended by the American Psychological Association (APA) Publication Manual. Research Design: The author examined 49 volumes of…

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…

Authors who write introductory business statistics texts do not agree on when to use a t distribution and when to use a Z distribution in both the construction of confidence intervals and the use of hypothesis testing. In a survey of textbooks written in the last 15 years, we found the decision rules to be contradictory and, at times, the…

A model and computation procedure based on classical test score theory are presented for determination of a correlation coefficient corrected for attenuation due to unreliability. Delta and Monte Carlo method applications are discussed. A power analysis revealed no serious loss in efficiency resulting from correction for attentuation. (TJH)

Discussion of knowledge maps focuses on a study at Texas Christian University that was conducted to determine the effects of scripted cooperation in a hypermap environment. Hypermap and hypertext versions of MacStat--the software for univariate statistics that was used in the study--are described, and performance measures are explained. (17…

The central thesis of this article is that the process of eliminating validity threats depends fundamentally on no-difference findings, a fact that has not been made explicit by researchers. The implications of this neglect are explored using examples from a number of different substantive areas such as psychology, health, and medicine.…

Discusses five common myths about statistical significance testing (SST), the possible erroneous and harmful contributions of SST to educational research, and suggested alternatives to SST for mathematics education research. (Contains 61 references.) (MKR)

Describes the model for decision making used in inferential statistics and real-world applications that parallel the statistical model. Discusses two activities that ask students to write about a personal decision-making experience and create a mock trial in which the class makes the decision of guilt or innocence. (MDH)

This study was designed to assess the attitudes of Nigerian secondary school teachers to student evaluation of teachers (SET), and to find out if the attitudes expressed were influenced by teacher characteristics such as gender, professional status, geographical location, academic qualification and teaching experience. The study was a survey, and…

This article explores the use of improvisation (improv) as a lens for viewing and describing teacher-child interactions. The author describes the relationship between the principles of improv and the characteristics of responsive teaching, and how improv can be used as a lens for seeing relational activity. The author hypothesizes that improv…

This paper evaluates the logic underlying various criticisms of statistical significance testing and makes specific recommendations for scientific and editorial practice that might better increase the knowledge base. Reliance on the traditional hypothesis testing model has led to a major bias against nonsignificant results and to misinterpretation…

A new computer-based approach for teaching counselors about predictive validity and how to use tests in clinical decision making was developed and tested. The approach is based on concepts similar to those used in inferential statistics, particularly statistical hypothesis testing. To implement this model, the counselor must: (1) determine the…