StatXact 8

New in StatXact 8 | System Requirements | Further Information

"The culmination of ten years of intense research and development, StatXact 8 is the most complete, up-to-date software package for exact nonparametric statistical inference on continuous or categorical data in the world. With StatXact we've covered every mainstream nonparametric procedure, using a full-fledged GUI implementation under Windows. We have provided at least one solution for every important nonparametric statistical problem involving either binary, categorical or continuous data. And, as is our trade-mark, every single one of these solutions is exact. That is, it remains valid for small, sparse and unbalanced data sets. All in all you can access over 80 exact procedures through the StatXact pull-down menus. In addition, we've provided the tools for you to construct your own exact procedures, or to combine two or more procedures in an optimal fashion through a suitable choice of scores. When it comes to handling small-sample data, no other statistical package can even come close to the power and scope of StatXact. Here are some highlights from the StatXact procedures:"

• Exact tests and p-values for Poisson (person-years) data
• Exact confidence intervals for Poisson (person-years) data
• Shorter exact confidence intervals for binomial data
• Exact confidence intervals for multinomial data
• Conditional (post-hoc) power calculations for stratified linear rank tests
• Exact confidence intervals for ratios and differences of two binomial proportions
• Exact Hodges-Lehmann confidence interval for a shift between two distributions
• Exact goodness-of-fit tests
• Exact Kolmogorov-Smirnov two-sample test
• Exact Friedman and Cochran-Q tests for K related samples
• Exact generalized ANOVA tests
• Exact tests on measures of association
• Exact stratified linear rank tests with stratum-specific scores
• Exact stratified linear rank tests with optimally combined scores
• Exact K-sample tests for censored survival data

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New Features in StatXact 8

The Friedman Aligned Rank Test Friedman's Aligned Rank Test serves as an alternative to the regular Friedman Test. The aligned rank test is a better choice when the data have very few treatments and the blocks have different magnitudes of effect and scale. The regular Friedman test is less sensitive for smaller number of treatments. This is due to the fact that in Friedman test, the observations are ranked within a block. Thus the comparison is made among the responses within each block only. The comparison of responses between blocks will not be meaningful as the blocks might have different magnitudes of effect and scale among themselves. The blocks may be such that some may give consistently high, and others consistently low, responses.

• NEW: Stratified Wilcoxon Signed Rank test utilizing case data on paired samples
• Perform test of correlation across single – not bi-variable – correlation
• Compute p-value for the test of trend in multiple outcomes
• Estimate conditional maximum likelihood of trend parameters in correlated data
• Conduct clustered response tests for correlation significance
• Better batch language to speed analyses

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System Requirements

System Requirements:

Operating System: Windows XP, 2000, NT Minimum CPU: Minimum Memory: 256 MB Hard Disk Storage: 200 MB

Further Information

• StatXact Homepage