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What's New in the Interactive Statistical Pages

Online University -- A site with a wide variety of academic-based articles that take an insightful approach, igniting the educational curiosity in us all.  Not specifically a statistics site, but well worth looking at nonetheless! (added 03/27/2012)
VSUstat -- a free online statistical analysis tool for basic experimental design. It can do ANOVA and post-hoc analysis using Tukey's HSD and Fisher's LSD for completely randomized designs (CRD), randomized complete block designs (RCBD), Latin square designs, and two-factor factorial design for CRD and RCBD. It can also calculate descriptive statistics (sum, mean, range, min, max, standard deviation, variance, standard error mean, skewness, standard error skewness, standard error kurtosis) and analyze Student's t-test (one-sample t-test, independent-samples t-test, paired-samples t-test). VSUstat can import, export, and save datasets, access public datasets, and produce output in PDF, HTML, XLS, and RTF. (added 02/24/2012)

Added a link to a Ukrainian translation of my non-linear least squares curve-fitting page. (added 08/31/2011)

C Programming Tutorial -- A set of short tutorial taking you through the process of creating C programs, from the simplest "Hello World" application, to more complex programs using variables and expressions, input and output, if/then/else and while constructs, and arrays. (added 04/28/2011)

Kaplan-Meier Survival Plot (with 95% Conf.Intervals) and LogRank Test -- Type or copy/paste data, or read it in from a file. Prepares  tables, graphs, and statistical comparison output. Can perform stratified log-rank test. (added 02/10/2011)

Another very good Normal Distribution calculator, with nice graphics

Sample-size calculator for cluster randomized controlled trials, which are used when the outcomes are not completely independent of each other. This independence assumption is violated in cluster randomized trials because subjects within any one cluster are more likely to respond in a similar manner. A measure of this similarity is known as the intra-correlation coefficient (ICC). Because of the lack of independence, sample sizes have to be increased. This web site contains two tools to aid the design of cluster trials – a database of ICCs and a sample size calculator (along with instruction manuals). (added 07/08/2010)

Two websites by Jeremy Taylor, dedicated to helping graduate students and professionals with their statistical analysis or problems. (added 07/03/2010)
Data Preparator -- handles the "pre-processing" chores of getting a data file ready for analysis... data cleaning, discretization, numeration, scaling, attribute selection, missing values, outliers, statistics, visualization, balancing, sampling, row selection, and several other tasks, with a user-friendly graphical interface. It's written in Java, and runs on Windows, Mac OS/X, and Linux. The free demo has all features enabled, and will handle up to 200 cases. (added 05/09/2010)



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