pairwise.wilcox.test          package:stats          R Documentation

_P_a_i_r_w_i_s_e _W_i_l_c_o_x_o_n _r_a_n_k _s_u_m _t_e_s_t_s

_D_e_s_c_r_i_p_t_i_o_n:

     Calculate pairwise comparisons between group levels with
     corrections for multiple testing.

_U_s_a_g_e:

     pairwise.wilcox.test(x, g, p.adjust.method=p.adjust.methods, ...)

_A_r_g_u_m_e_n_t_s:

       x: Response vector 

       g: Grouping vector or factor 

p.adjust.method: Method for adjusting p values (see 'p.adjust') 

     ...: Additional arguments to pass to 'wilcox.test'.

_V_a_l_u_e:

     Object of class '"pairwise.htest"'

_S_e_e _A_l_s_o:

     'wilcox.test', 'p.adjust'

_E_x_a_m_p_l_e_s:

     data(airquality)
     attach(airquality)
     Month <- factor(Month, labels = month.abb[5:9])
     ## These give warnings because of ties :
     pairwise.wilcox.test(Ozone, Month)
     pairwise.wilcox.test(Ozone, Month, p.adj = "bonf")
     detach()

