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MannWhitney Test
This tutorial on the MannWhitney test includes its definition, assumptions, characteristics, and hypotheses as well as procedures for graphical comparisons. An example using output from the WINKS software is given, but those without the software can still use the tutorial. An exercise is given at the end that can be done with any statistical software package.




http://www.texasoft.com/winkmann.html



Statistics Explained
This site contains 100 modules designed to introduce concepts in statistics. The modules are divided into categories such as Descriptive Statistics, Inferential Statistics, Related Measures, Enumeration Statistics, and ANOVA. Click the green button on the side to start the modules, then click "Main Menu" at the top to see a list of topics. Topics include Describing Numbers, Normal Curve,...




http://www.animatedsoftware.com/elearning/Statistics%20Expla...



Quantitative Data Activity
This activity explains the important features of a distribution: shape, center, spread, and unusual features. It also covers how to determine the difference between mean and median, and their respective measures of spread, as well as when to apply them to a particular distribution. Graphical displays such as: histograms and boxplots are also introduced in this activity.
The corresponding data...




http://www.causeweb.org/repository/ACT/Quant_Activity.doc



Regression Activity
This activity focuses on basic ideas of linear regression. It covers creating scatterplots from data, describing the association between two variables, and correlation as a measure of linear association. After this activity students will have the knowledge to create output that yields Rsquare, the slope and intercept, as well as their interpretations. This activity also covers some of the...




http://www.causeweb.org/repository/ACT/Regression_Activity.d...



Sample Survey Activity
This activity stresses the importance of writing clear, unbiased survey questions. It explore the types of bias present in surveys and ways to reduce these biases. In addition, the activity covers some basics of surveys: population, sample, sampling frame, and sampling method.




http://www.causeweb.org/repository/ACT/Sample_Survey_Activit...

