The unit STATIS offers some of the most fundamental procedures of mathematical statistics. Along with the Gamma and the Beta function, all major types of distributions are implemented (normal, t, F, and chi-square distribution). A major benefit of this package is that the distribution functions are calculated analytically and not by approximations, or by table lookup. Thus the precision is at least eight digits. More details can be found in the online help pages.

The unit STATIS is part of the SDL Component Suite.

What's new:

• Release 9.0   [May-28, 2007]
   
  • no changes
  
  
• Release 8.5   [Feb-18, 2006]
   
  • function DeanDixonCriticalValues provides critical values of the Dean-Dixon outlier test
  • new function DeanDixonTest performs the Dean-Dixon outlier test
  • UDistriQuantile, UDistriIntegral, and UDistriDensity implemented
  • Mann-Whitney U-Test implemented (PerformMannWhitneyUTest)
  • TSignifLevelEx and NumericSigLevel extend definition of levels of significance
  • hypergeometric distribution implemented: HyperGeoDistriDensity
  • KendallsTau implemented (calculates Kendall's tau-b rank correlation coefficient)
  • KruskalGamma implemented (calculates Kruskal's gamma value)
  • SpearmanRankCorr implemented (calculates Spearman's rank correlation
  
  
• Release 8.2   [Nov-03, 2004]
   
  • no changes
  
  
• Release 8.1   [Aug-29, 2004]
   
  • available for Delphi™ 8 for .NET
  • class TRandGen moved from unit MATH1 to unit STATIS
  
  
• Release 8.0   [Apr-15, 2004]
   
  • new function Perform2SampleTTest for performing a two-sample t-test implemented
  • error function Erf and ErfApprox implemented
  • bug fix: function IncompleteGamma is now declared in the interface section
  
  
• Release 7.2   [Mar-23, 2003]
   
  • STATIS is now part of MathPack
  • improvement: Chi2DistriDensity does not crash anymore if called with invalid parameters
  
  
• Release 7.0   [Sep-15, 2002]
   
  • available for Delphi™ 7.0
  • the unit is now CLX compatible
  
  
• Release 6.5   [May-28, 2002]
   
  • available for C++Builder™ 6.0
• Release 6.0   [Aug-06, 2001]
   
• available for Delphi™ 6.0
• new functions implemented: FisherTransform, FisherTransformInv, ConfidenceInterval
   
• Release 5.5  [May-01, 2000]
   

      available for C++Builder™ 5.0
 
• Release 5.0   [Oct-07, 1999]
   
• STATIS is now available for Delphi™ 5.0
   
• Release 1.1    [Mar-27, 1999]
   
• STATIS is now available for C++Builder™ 4.0