

_R_e_s_u_l_t_s _f_r_o_m _a_n _E_x_p_e_r_i_m_e_n_t _o_n _P_l_a_n_t _G_r_o_w_t_h

     data(PlantGrowth)

_F_o_r_m_a_t:

     A data frame of 30 cases on 2 variables.

      [, 1]     weight     numeric
      [, 2]     group      factor

     The levels of `group' are `ctrl', `trt1', and `trt2'.

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

     Results from an experiment to compare yields (as meas-
     ured by dried weight of plants) obtained under a con-
     trol and two different treatment conditions.

_S_o_u_r_c_e:

     Dobson, A. J. (1983).  An Introduction to Statistical
     Modelling.  London: Chapman and Hall.

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

     ## One factor ANOVA example from Dobson's book, cf. Table 7.4:
     data(PlantGrowth)
     anova(lm(weight ~ group, data = PlantGrowth))

