[ New Features | Overview | Graphs | Statistics | Requirements ]

SigmaStat 3.5 Guides You Through Your Analysis
SigmaStat's "expert system" design intelligently guides you through your entire statistical analysis to reduce the risk of making statistical mistakes and help you draw the right conclusions by:

* recommending the test to run
* checking for violations in the underlying assumptions of the test
* handling messy data
* running the appropriate test, and
* printing an explanation of the results

SigmaStat's "expert" system design effortlessly gives you accurate results you can trust -- whether you're doing research to compare group differences, find an association between groups or simply summarize your data with basic statistics.
No other software program is as easy to use and as "smart" as SigmaStat.

"SigmaStat is the best statistical software I've ever used. It satisfies the important data analysis needs of researchers working with models, it's easy to use, saves time by providing an explanation of results, and conveniently contains statistical tests, reports and graphing capabilities all in one package."
Ludmilla Pachepsky, Systems Research Lab

SigmaStat is the program research scientists turn to when they want to be expertly guided through the analysis of their data. Click to view larger image

New features in SigmaStat 3.5

• Access to SigmaPlot
• Survival analysis
• New report page
• New data worksheet
• Graphing improvements
• Support for Microsoft® Windows® 2000 and Windows XP
• And more…

Integrated with SigmaPlot 10 & 11 Prepare your SigmaStat graphs for publication using of SigmaPlot’s advanced graph editing capabilities on your SigmaStat graphs. SigmaPlot 10.0 or 11.0 must be installed.

Access SigmaPlot from SigmaStat's Graph menu, and then use SigmaPlot's Page toolbar to edit multiple items simultaneously or to selectively edit individual bars, lines or points. Click to view larger image

Survival analysis Predicting survival or reliability rates is difficult when you don't know the final outcome for every subject. Now it's easier, because SigmaStat 3.5 includes the Kaplan-Meier (product limit) method to estimate the survival function of cases followed over time. You can compare survival rates among groups, using SigmaStat's robust multiple comparison tests. And display the results just as you like, thanks to a variety of survival curve options, including error bars and confidence intervals. Use Kaplan-Meier (product limit) estimation method Compare results for single or multiple groups Perform multiple comparison tests, including Holm-Sidak Analyze data in either raw format (one group per column) or indexed data (all groups in a single column) Choose survival curve options: show error bars or confidence intervals, display censored values, define the survival scale as percent or fraction, and differentiate groups with color

Compare survival rates among groups, and then display survival curves the way you prefer. Add error bars or confidence intervals, display of censored or failure values, define the survival scale as percent or fraction, and differentiate with color. Click to view larger image

• Export reports to both PDF and HTML formats
• Use familiar keystroke commands to move through a report and select text
• Add decimal tabs and margin controls more easily with improved formatting ruler
• Preview report before printing
• Edit your report efficiently with new "multiple undo" option

New data worksheet The new SigmaStat worksheet contains 32 million rows and 32,000 columns, to keep pace with the increasing volume of data you collect. You can move to the end of columns or rows with the same keyboard commands that you use in familiar spreadsheet programs, allowing you to keep your hands on the keyboard when entering data. Format both columns and individual cells to display each type of data in an appropriate format, allowing you to use integers and decimal values in the same worksheet. Load data into as many as 32 million rows and 32,000 columns Use familiar keystroke commands to move through the worksheet and select cells Format individual worksheet cells and columns Adjust row and column sizes Add row titles Use longer text strings and variable names in row and column headings Select a data point or group of points in a graph, and see the corresponding cell, column or row highlighted in the worksheet Define a data point as text, so that it is excluded from further analysis, and check for the effect of outliers while keeping your data intact Edit your worksheet efficiently with new "multiple undo" option

Format cells to display integers and decimal values in the same worksheet. Add row titles, use long text strings for column headings or worksheet cells, adjust the row or column sizes. Select a point or group on your graph, such as an outlier, and the corresponding cell, column or row is highlighted in the worksheet. Click to view larger image

• Use the improved Graph Wizard to:
  • Create graphs from data in various formats - such as XY pair, single Y/X, multiple X/Y, and more
  • Select a range of rows from a column
  • Recall previous selections
• Position objects precisely by using new grid lines and "snap-to" options
• Hold graphs at a preferred viewing size, by setting a default zoom level
• Insert graph legends automatically
• Incorporate additional symbol types
• Edit graphs efficiently with "multiple undo" option