Oats                  package:nlme                  R Documentation

_S_p_l_i_t-_p_l_o_t _E_x_p_e_r_i_m_e_n_t _o_n _V_a_r_i_e_t_i_e_s _o_f _O_a_t_s

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

     The `Oats' data frame has 72 rows and 4 columns.

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

     This data frame contains the following columns:

      Block an ordered factor with levels `VI' < `V' < `III' < `IV' <
            `II' < `I'

    Variety a factor with levels `Golden Rain'  `Marvellous'  `Victory' 

      nitro a numeric vector

      yield a numeric vector

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

     These data have been introduced by Yates (1935) as an example of a
     split-plot design. The treatment structure used in the experiment
     was a 3x 4 full factorial, with three varieties of oats and four
     concentrations of nitrogen. The experimental units were arranged
     into six blocks, each with three whole-plots subdivided into four
     subplots. The varieties of oats were assigned randomly to the
     whole-plots and the concentrations of nitrogen to the subplots. 
     All four concentrations of nitrogen were used on each whole-plot.

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

     Pinheiro, J. C. and Bates, D. M. (2000), Mixed-Effects Models in S
     and S-PLUS, Springer, New York.  (Appendix A.15)

     Venables, W. N. and Ripley, B. D. (1999) Modern Applied Statistics
     with S-PLUS (3rd ed), Springer, New York.

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

     data(Oats)

