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4434SPSS for Windows 22.0: A Basic Tutorial
http://www.merlot.org/merlot/viewMaterial.htm?id=337126
This OPEN TEXTBOOK is intended for those who want to learn the basics of SPSS (Version 22). This book can be used as a text in a class or by those working independently. It was written as a tutorial. Each chapter has instructions that guide you through a series of problems, as well as graphics showing you what your screen should look like at various steps in the process. The data set that accompanies the text, GSS12A, can be downloaded from this website. The data have been weighted by the variable (wtss) that is provided by the National Opinion Research Center at the University of Chicago. There are also exercises at the end of each chapter for further practice and more exercises and teaching modules at this same web site. In order to use the software that you will need for this book, you will either have to purchase SPSS or find a computer laboratory in which SPSS has been installed. Most colleges and universities have labs where you can use SPSS. If you purchase SPSS, we suggest you buy the Graduate Pack.Statgraphics Online
http://www.merlot.org/merlot/viewMaterial.htm?id=345247
This Web site is designed for interactive statistical analysis over the Internet. Data can be entered in various ways, including through Excel files. The service is free for data sets no larger than 100 rows and 10 columns. Among the many types of analyzes available are scatter plots, frequency histograms, contingency tables, multiple variable analysis, distribution fitting, ANOVA, multiple regression, forcasting, etc. Additionally, the site offers several "statlets." These are Java applet interactive applications that provide scatter plot brushing, smoothing, and curve fitting among others.Polynomial Regression and the Newton's Root-finder
http://www.merlot.org/merlot/viewMaterial.htm?id=79901
Polynomial regression models are often used in economics such as utility function, forecasting, cost and befit analysis, etc. This JavaScript provides polynomial regression up to fourth degrees. This site also presents a JavaScript implementation of the Newton's root finding method.Quadratic Regression and Its Calculus
http://www.merlot.org/merlot/viewMaterial.htm?id=79907
Quadratic regression models are often constructed based on certain conditions that must be verified for the model to fit the data well, and to be able to predict accurately. This site also presents useful information about the characteristics of the fitted quadratic function.