The material covers the basics of an introductory statistics class. The site includes interactive text material, case studies, simulations and numerous links. Topics covered include Analysis of Variance, Boxplot, Confidence interval, Contrast among means, Correlated t-test, Correlation, Histogram, Independent groups t-test, Regression, Repeated measures ANOVA, and t-test. The applets in the simulations/demonstrations are in the public domain and can therefore be used without restriction. Simulations and demonstrations and source code are available for download.
After studying the material, individuals will have a basic understanding of elementary statistics, including descriptive statistics, inferential statistics, hypothesis testing, analysis of variance and correlation.
Target Student Population:
The site is best suited for elementary statistics students, probably undergraduates or masters degree candidates needing a background in statistics.
Prerequisite Knowledge or Skills:
Basis understanding of mathematics/algebra is helpful. This site starts with the most basic statistical concepts.
Type of Material:
Tutorial and reference materials for students and instructors.
This site could be an excellent supplement to a research methods course in which students may need basic background in statistics or as a supplemental "text" for students in a statistics clss.
This material can be used in four ways: 1. Demonstrations during class lectures. 2. Homework with review and excerises to provide the user practice. 3. Use of cases for independent practice of new knowledge and skills. 4. Assist the viewer in analysis of data for simple research projects.
In order to fully access all elements of this site, the viewer may need to download a program that allows their computer to unzip files (Stuffit Expander). There is a trial version of this program available (link for downloading is provided), but in order to fully utilize and for future utilization, purchasing of the program must be made at a cost depending on the platform you will use (mac, windows, linux). Java is also needed.
Evaluation and Observation
The material masses written descriptions of basic statistical concepts along with visual demonstrations of that concept into one on-line tutorial. The material contains simulations and demonstrations for both the student and an instructor that gives a visual demonstration of the concept and further explains the concept. This reviewer found this to be extremely useful from both an instruction point, but also as a learning activity. Practice excerises are provided for each of the statistical concepts in the package along with a section of Cases that provide independent practice for the student to develop "ownership" of the information. The site is well designed with a consistend format that makes navigation easy. Embeded within ghe narriative of the site are "hotlinks" for tems and demonstrations that expand the viewers knowldge. The information provided along with the excerises are consistent with current text for beginning statistics and research.
Some of the material is a bit confusing and includes terms and vocabulary which may frustrate students.
Potential Effectiveness as a Teaching Tool
This reviewer sees this material as a very useful teaching tool. It can be used as a "workbook" for basis statistics classes. It can also be used as a review for the learner and for those students who may have missed a class. The excerises and cases can be assigned for independent practice. This site also allows the viewer to enter data and to receive an analysis of the data for use in research projects.
Very helpful interactive support.
The reviewers cautions the users of this learning object about thinking that this site will replace the traditional/on-line interaction of a class between the instructor and student. Many of the very important neuances of that interaction will be lost if this is the only source used for learning statistics and statistical analysis.
Ease of Use for Both Students and Faculty
This material is easy to use. Consistent layout and design make navigation easy. Embedded links, when activated, do not cover the entire screen thus giving the viewer a sense of comfort that they are not lost. There is a "close window" feature that lets the viewer return to the page they were on. This lessens the possibility that the viewer can "get lost" in a site and have to get out of the site and start over. Java program required for full use of the site.
This viewer could not fully use the Analysis Lab feature because a Java applett feature was not on the computer used for viewing this material. The message gives was "the internet browser does not allow an applet communicate with clipboard. Please try to use keyborad "Copy" or "Paste" command to copy date in or paste date out of this "Enter Data" frame. If keyboard commands do not work and you want to copy or paste date, please follow the instructions to change your local java.policy file." This may be a "turnoff" to some users.