SYSTAT

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SYSTAT is the name of a statistical software as well as several companies that have developed and marketed this product and are still doing so.

Business

The software Systat was developed in the late 1970s by Leland Wilkinson, a lecturer in psychology at the University of Illinois at Chicago. He co-founded with his wife in 1983, the company Systat.

Leland sold Systat for 1995 to the rival firm SPSS, SPSS Science Division whose division the product Systat further sales in the scientific market. Wilkinson himself took a leading position in SPSS and the last 50 employees jobs were also available in SPSS. As of 2002, SPSS concentrated on the area of ​​economic analysis programs, and sold to the Systat in Bangalore resident and publicly listed companies in India Cranes Software. For sales and user support Cranes founded in the United States, Systat Software Inc., based in San Jose, California, and most other national companies. SYSTAT distributes addition to the product of the same name also SigmaStat software package, which is provided for statistical analysis and supports the user with various automated functions.

Software

The development of Systat was initially carried out on Wang mainframes. Upon publication of the first personal computer, microprocessor-based, however, Wilkinson moved to this platform, since the compilation times were much lower there. The software was one of the first products in this market segment that gave up a copy. Also, the Windows version largely functionally identical version for MacOS was relatively early in the market.

Was posted in Fortran While the source code of the software of the product until 2005, Systat was published in a coded in C version from the moment in version 11 for the first time. The version 12 was released in the spring of 2007 with improvements in the user interface and several new features.

Functions

Systat supports various functions:

  • ANOVA / MANOVA / ANCOVA
  • Distribution adjustments
  • Bootstrapping methods
  • Canonical correlations and set-
  • Classification and regression trees
  • Cluster analysis
  • Correspondence analyzes
  • Design of Experiments ( DOE)
  • Discriminant analysis
  • Factor analysis and principal component analysis
  • General linear models ( GLM ) and analysis of mixed models
  • Quality analyzes
  • Logistic regression and probit analyzes
  • Log - linear models
  • Bayesian regressions
  • Missing Value Analysis
  • Mixed regression hypotheses tests
  • Multidimensional scaling and perceptual mapping
  • Multiple linear and non-linear regression
  • Robust regressions (LMS ), ( LTS ), (S )
  • Nonparametric tests
  • Cluster analysis, distance and Ähnlichkeitsmatrizen, cluster Validitäts indices
  • Partially ordered scale analyzes
  • Path analyzes ( RAMONA )
  • Repeated Measures
  • Monte Carlo analysis
  • Signal detection and spatial statistics
  • Smoothing modules
  • Ridge and rank regressions
  • Post- hoc tests for Repeated Measures.

Further importance

SYSTAT was also the name of a command to the operating systems TOPS -10 and RSTS / E from DEC, which indicated the computer user the current status of the running operating system. For this, the logged-in user, current on the computer processes running I / O operations and other important system included management information.

The command Systat is also available in operating systems, which go back to BSD.

TOPS-10
758595
de