Numerical computation of rectangular bivariate and trivariate normal and t probabilities

  • Authors:
  • Alan Genz

  • Affiliations:
  • Department of Mathematics, Washington State University, Pullman, WA 99164-3113, USA. alangenz@wsu.edu

  • Venue:
  • Statistics and Computing
  • Year:
  • 2004

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Abstract

Algorithms for the computation of bivariate and trivariate normal and t probabilities for rectangles are reviewed. The algorithms use numerical integration to approximate transformed probability distribution integrals. A generalization of Plackett's formula is derived for bivariate and trivariate t probabilities. New methods are described for the numerical computation of bivariate and trivariate t probabilities. Test results are provided, along with recommendations for the most efficient algorithms for single and double precision computations.