Department of Rehabilitation Sciences, School of Allied Health Sciences, Texas Tech University Health Sciences Center, Lubbock, TX Address all correspondence and requests for reprints to: Steven F. Sawyer, PT, PhD, [email protected] Analysis of variance (ANOVA) is a statistical tool used to detect differences between experimental group means. ANOVA is warranted in experimental designs wi...

One of the hallmarks of statistical thinking is the importance of measuring and understanding variability. The Shewhart Control Chart, which separates special cause from common cause variation, is one of the most important tools for understanding the current state of a process. The analysis of variance (ANOVA) is another statistical tool for splitting variability into component sources. These c...

Accepted 21 May 2008 Copyright © EEF ISSN 1399-1183 Statistical analysis is an important and responsible stage in ecological research, often posing a challenge. One of the main problems is that the statistical samples typical of ecological research frequently include data that violate the original assumptions of standard analytical tools. A large array of tests has been designed for data of dif...

Significance testing in comparisons is based on Student's t-tests for pairs and analysis of variance (ANOVA) for simultaneous comparison of several procedures. Access to the average, standard deviation and number of observations is sufficient for calculating the significance of differences using the Student's tests and the ANOVA. Once an ANOVA has been calculated, analysis of variance component...

I. Definition and Applications...............................................................................2 II. Two-Way ANOVA prerequisites.......................................................................2 III. How to use the Two-Way ANOVA tool?...........................................................3 A. Parametric test, assume variances equal. .........................................

ROC analysis is being used with greater frequency as an evaluation methodology in machine learning and pattern recognition. Researchers have used ANOVA to determine if the results from such analysis are statistically significant. Yet, in the medical decision making community, the prevailing method is LABMRMC. Although this latter method uses ANOVA, before doing so, it applies the Jackknife meth...

ABSTRACT The measarement of change is such a broad topic` that this arti cle 'must limit its focus to /a few_specific subtopics,: These .specific topidS include: longitudinal research design, attrAztion in research studies, the statisticalarialysis of difference sabres,-and the comparison of analysis of variance (ANOVA) and multivariate analysis; of variance (MANOVA) techniques in analyzing rep...