GRASS GIS 7 Programmer's Manual
GRASS testing normality & exponentiality Library

by Darrell McCauley and GRASS Development Team (

GRASS library for testing normality & exponentiality

  • Moments {b_1} and b_2
  • Geary's a-statistic & an approx. normal
  • Cdhc_extreme normal deviates
  • D'Agostino's D & an approx. normal
  • Kuiper's V (regular & modified for normality)
  • Watson's U^2 (regular & modified for normality)
  • Durbin's Exact Test (modified Kolmogorov)
  • Anderson-Darling's A^2 (regular & modified for normality)
  • Cramer-Von Mises W^2(regular & modified for normality)
  • Kolmogorov-Smirnov's D (regular & modified for normality)
  • Chi-Square stat (equal probability classes) and d.f.
  • Shapiro-Wilk W
  • Weisberg-Bingham's W''
  • Shapiro-Wilk W''
  • Kotz' T'_f (Lognormality vs. Normality)

Loading the CDHC Library

The library is loaded by specifying


in the Makefile.

List of functions