sugar                 package:Rnotes                 R Documentation

_F_i_s_h_e_r'_s _S_u_g_a_r _B_e_e_t _D_a_t_a

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

     A classical 3 by 2-cubed randomized block experiment in four
     blocks of size 24.  The response is the total weight of sugarbeet
     roots off the plot, but this is accompanied by the number of roots
     measured.  The suggestion is that number of roots should be a
     covariate to allow for varying plot size.

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

     The factors are Variety (3 levels, a, b and c), and N, P and K
     each at 2 levels, present or absent.

     The data frame contains the following components: 

   Block: Block number, I, II, III or IV 

       V: Variety 

       N: Nitrogen present/absent 

       P: Phosphorous present/absent 

       K: Potassium present/absent 

      No: Number of roots 

      Wt: Weight 

_C_A_T_E_G_O_R_Y:

     Analysis of variance and covariance.

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

     R. A. Fisher, "Design of Experiments"

