whittermore             package:DCluster             R Documentation

_W_h_i_t_t_e_r_m_o_r_e'_s _s_t_a_t_i_s_t_i_c

_D_e_s_c_r_i_p_t_i_o_n:

     Whittermore's statistic is defined as follows:


                       W = ((n-1) / n ) r' D r


     where r' = [O_1/O_+, ..., O_n/O_+] and D is a distance matrix
     between the centroids of the areas.

     It can be used to assess whether the region under study tends to
     cluster or not.

_R_e_f_e_r_e_n_c_e_s:

     Whittermore, A. S. and Friend, N. and Byron, W. and Brown, J. R.
     and Holly, E. A. (1987). A test to detect clusters of disease.
     Biometrika 74, 631-635.

_S_e_e _A_l_s_o:

     DCluster, whittermore.stat, whittermore.boot, whittermore.pboot

