waerden.test            package:agricolae            R Documentation

_M_u_l_t_i_p_l_e _c_o_m_p_a_r_i_s_o_n_s. _T_h_e _v_a_n _d_e_r _W_a_e_r_d_e_n (_N_o_r_m_a_l _S_c_o_r_e_s)

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

     A nonparametric test for several independent samples.

_U_s_a_g_e:

     waerden.test(y, trt, alpha=0.05, group=TRUE, main=NULL)

_A_r_g_u_m_e_n_t_s:

       y: Variable response 

     trt: Treatments 

   alpha: Significant level 

   group: TRUE or FALSE 

    main: Title 

_D_e_t_a_i_l_s:

     The data consist of k samples of posibly unequal sample size.

_V_a_l_u_e:

      y : Numeric

    trt : factor

  alpha : Numeric

   group: Logic 

   main : text

_A_u_t_h_o_r(_s):

     Felipe de Mendiburu

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

     Practical Nonparametrics Statistics. W.J. Conover, 1999

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

     'kruskal'

_E_x_a_m_p_l_e_s:

     library(agricolae)
     # example 1
     data(corn)
     attach(corn)
     comparison<-waerden.test(observation,method,group=TRUE)
     comparison<-waerden.test(observation,method,group=FALSE)
     # example 2
     data(sweetpotato)
     attach(sweetpotato)
     comparison<-waerden.test(yield,virus,alpha=0.01,group=TRUE)

