SAS Institute provides no interface with StatXact. StatXact is a software product from Cytel Software Corp. They have developed a set of SAS procedures (called Proc-StatXact) that implement a range of exact methods. StatXact 11 - Kommerziell - Windows - Single User, Bundle mit LogXact, 2584,68. It's also a computer program you may download and use for free.
A full-featured statistical program with many sophisticated algorithms to ensure accuracy click the image to enlarge Figure 1: Main Screen StatXact is software for conducting exact statistical tests, confidence intervals and power/sample size calculations. For the non-initiated, these are tests that calculate exact p-values from compilations of tables, giving more extreme values than a given cutoff table. These are to be contrasted with p-values based upon asymptotic theory that requires very large samples and a normal distribution. As large sample size and normal distribution requirements are not always a good match for real-world data, the researcher has some need for these types of calculations.
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StatXact is just one part of Cytel Studio, which serves as the Windows base for this program and its sister software, LogXact, and provides the more basic statistical and plotting functions. Version 6 of this software is designed for Windows NT/2000/XP and requires at least a 1 GHz processor with 512 MB to 1 GB of RAM (depending upon the size of the data sets and calculations). At least 5 GB of available hard disk space are recommended, but presumably this could be reduced for only modest-sized datasets. Upon boot up, the main screen appears (Figure 1). This consists of the menu and tool bars (which will be familiar to Windows users) the navigator area and the case data spreadsheet.
As analyses or plots are generated, they can be immediately accessed by either the navigator icons or tabs that appear above the spreadsheet. Download game sao untuk pc game. The spreadsheet is not terribly Excel-like, and this is a problem as the analyst will not be able to manipulate the data as readily as in Excel, or slice and dice columns/rows as with some other statistical programs.
There is capability to do simple cut-and-paste operations as well as sort, filter and transform data. StatXact allows a wide variety of file imports (Excel, Lotus, ASCII, SAS, Stata, Statistica, SPSS, Systat, BMDP and dBASE), but not so many exports (ASCII, SAS, Stata and SPSS).
In addition, it is a simple matter to copy and paste data (minus the headers) from programs such as Excel and JMP into StatXact, or vice versa. Now, the standard commentary concerning the manuals click the image to enlarge Figure 2: Box Plots For those who hate to continuously stare at a computer screen and who have trouble finding everything from the online help or the help menu, the developers supply three very well-written and complete manuals. The Cytel Studio Base manual will start the novice off with minimal pain, and the two StatXact manuals will fill in much of the theoretical detail for more advanced users. The indices are actually useful, the pagination continuous across both manuals, and both volumes have a full subject index. Graphics capabilities are limited, but this is not a graphics program. Standard analytic plots such as the histogram, box, line, scatter, and stem and leaf are available, as well as several others (Figures 2 and 3). Basic modifications are possible through the 'Modify' button, which appears with each graphic.
As for the statistics, there is a complete menu of non-parametric choices (check their online brochure), of which the major categories are listed in Table 1. Please note, the software also will do the good old-fashioned descriptive statistics, as well as parametric tests and Monte Carlo simulations.
The menus are logically arranged and the tests are easy to access. However, once the user is set to do an analysis, the little nuances of the program become a bit too obvious.