s.normal(1)		      Grass User's Manual		   s.normal(1)



NNAAMMEE
       ss..nnoorrmmaall - tests for normality for sites.
       _(_G_R_A_S_S _S_i_t_e_s _P_r_o_g_r_a_m_)

SSYYNNOOPPSSIISS
       ss..nnoorrmmaall
       ss..nnoorrmmaall hheellpp
       ss..nnoorrmmaall [--qq] ssiitteess==_n_a_m_e [tteessttss==_r_a_n_g_e[,_r_a_n_g_e,...]]  [[ffiieelldd==_v_a_l_u_e]]

DDEESSCCRRIIPPTTIIOONN
       _s_._n_o_r_m_a_l computes tests of normality on a site list.

OOPPTTIIOONNSS
   FFllaagg::
       --qq     Quiet. Cut out the chatter when reading site list.


   PPaarraammeetteerrss::
       ssiitteess==_n_a_m_e
	      Name of sites list.

       tteessttss==_r_a_n_g_e[,_r_a_n_g_e,...]]
	      Tests of normality requested (see below).

       ffiieelldd  Number of z-field attribute to use for calculation default: 1



NNOOTTEESS
       The tests that _s_._n_o_r_m_a_l performs are indexed below.  The tests that are
       performed are specified by giving an index, ranges of indices, or  mul-
       tiple thereof.

	       Sample skewness and kurtosis

	       Geary's a-statistic and an approximate normal transformation

	       Extreme normal deviates

	       D'Agostino's D-statistic

	       Modified Kuiper V-statistic

	       Modified Watson U^2-statistic

	       Durbin's Exact Test (modified Kolmogorov)

	       Modified Anderson-Darling statistic

	       Modified Cramer-Von Mises W^2-statistic

	       Kolmogorov-Smirnov D-statistic (modified for normality testing)

	       Chi-Square test statistic (equal probability classes)  and  the
	      number of degrees of freedom

	       Shapiro-Wilk W Test

	       Weisberg-Binghams W'' (similar to Shapiro-Francia's W')

	       Royston's extension of W for large samples

	       Kotz Separate-Families Test for Lognormality vs. Normality


EEXXAAMMPPLLEE
       ss..nnoorrmmaall ssiitteess==_s_o_i_l_s tteessttss==_1_-_3_,_1_4

       computes  the  sample skewness and kurtosis, Geary's a-statistic and an
       approximate normal transformation, extreme normal deviates,  and  Roys-
       ton's W for the _s_o_i_l_s site list.

SSEEEE AALLSSOO
       s.univar

BBUUGGSS
       Please  send  all  bug  fixes  and  comments to the author or the grass
       development team.

       http://www.geog.uni-hannover.de/grass/

AAUUTTHHOORR
       James Darrell McCauley ,

       when he was at: Agricultural Engineering Purdue University

       _L_a_s_t _c_h_a_n_g_e_d_: _$_D_a_t_e_: _2_0_0_2_/_0_1_/_2_5 _0_5_:_4_5_:_3_5 _$



GRASS 5.0							   s.normal(1)
