Aanalysis or a limited set of tests statistical Packges3

Design-Ease and Design-Expert -- two programs from Stat-Ease that specialize in the design of experiments. Full-function 45-day evaluation copies of both programs are available for download.

AGREE -- to measure agreement of nominal data, where two or more judges classify objects into nominal scale categories.

Bayesware Discoverer -- a computer program able to learn Bayesian Belief Networks from (possibly incomplete) databases. Based on a new estimation method called Bound and Collapse. This is a commercial product, available free for educational and other non-commercial use. See also the freeware product: BKD: Bayesian Knowledge Discoverer.

ZeroRejects -- Implements the "Six Sigma" statistical process control methodology developed by Motorola. The alpha and beta version are freely downloadable. (Win 95/98/NT).

Prognosis -- for analysis of time-series data. Uuses artificial intelligence and powerful statistical methodology to achieve high forecasting accuracy. Easy to use; does not require any background in statistics or time series analysis. Free evaluation copy available for download.

Power and Precision -- (30-day free trial download) An "industrial strength" program for calculating power, sample size, and attainable precision for: t-tests and z-tests (1-group, 2-group, paired, unpaired), Proportions (1-group, 2-group Chi Square or Fisher Exact, McNemar, KxC, Sign test), Correlations (1-group and 2-group), ANOVA / ANCOVA (1-, 2-, or 3-way), Multiple hierarchical linear regression (covariates / main effects, interactions, dummy-coded variables, polynomial), R² increments, sequential sets), Logistic regression (1 or 2 continuous variables, 5-level categorical), Survival analysis (accrual options , constant or variable hazard, attrition), Equivalence tests (proportions or means).

StudySize (free demo subset and 30-day trial versions) -- for power / precision / sample size calculations, hypothesis testing, point estimation and confidence interval calculations. Includes equivalence- and non-inferiority testing for most tests, Monte Carlo simulation for small samples; group sequential interim analyses . Tests: Wilcoxon, Mann-Whitney, Sign; Student t, 1-way ANOVA, Fisher's exact, McNemar's,Chi2, Life table, Log-rank,Bioequivalence, Correlation and Regression coefficients. Point estimates & confidence intervals for means, medians, SDs, location & scale params in normal, log-normal, exponential, binomial, hypergeometric, Poisson distributions, and more.

The Unscrambler -- multivariate data analysis software for exploratory statistics, regression analysis, classification, prediction, principal components analysis (PCA), partial least squares regression (PLSR) analysis and three-way PLS regression and experimental design. Free 30-day evaluation copy available.

ADDPLAN -- software for sample size calculation and adaptive monitoring of clinical trials. Handles traditional single fixed sample designs, survival analyses, proportions, means, non-inferiority, flexible (adaptive) designs, group-sequential designs, ?-spending function designs, simultaneous control of Type I & II error, adaptive sample sze recalculation, recursive designs based on conditional Type I error, interim monitoring & analysis, classical stopping boundaries, repeated and end-of-trial conf. inter's and p-values, and a powerful simulation tool. Free 30-day limited-function trial version available for download.

Statistics Problem Solver -- tutoring software that not only solves statistical problems, but also generates step-by-step solutions in order to help students understand how to solve statistical problems. Includes: Histograms, Binomial, Poisson, Exponential, Continuous, Group Comparison and Test of Significance. Two other similar tutorial programs are available from the same company:  A&G Grapher -- for plotting any 2D or 3D equation typed into the program. Graphs can be customized in color, scale, resolution, etc., and can be exported or copied-and-pasted into other application. Also calculates slope, area under the curve, tracing and matrix transformation. Calculus Problem Solver -- differentiates any arbitrary equation and outputs the result, providing detailed step-by-step solutions in a tutorial-like format. Can also initiate an interactive quiz in which you can solve differentiation while the computer corrects your solutions.

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.

StatCalc (30-day free trial download) -- a handy desk-top tool and instructional aid that transforms from a standard calculator to a collection of modules that calculate statistics, graph distributions, and provide statistical help with definitions, formulas, and interpretation. (Windows)


WinSPC (30-day free trial)-- statistical process control software to:

• collect quality data from devices, shop-floor machines, data sources, other software systems, or via keyboard;
• monitor plant-wide operations from a single screen, and initiate corrective actions for out-of-control processes (trigger alarm, send email, page an operator, or shut down an out-of-control machine);
• perform statistical analysis to solve problems, optimize processes, and create quality reports.