cabbages                package:MASS                R Documentation

_D_a_t_a _f_r_o_m _a _c_a_b_b_a_g_e _f_i_e_l_d _t_r_i_a_l

_D_e_s_c_r_i_p_t_i_o_n:

     The 'cabbages' data set has 60 observations and 4 variables

_U_s_a_g_e:

     cabbages

_F_o_r_m_a_t:

     This data frame contains the following columns:

     '_C_u_l_t' Factor giving the cultivar of the cabbage, two levels:
          'c39' and 'c52'.

     '_D_a_t_e' Factor specifying one of three planting dates: 'd16', 'd20'
          or 'd21'.

     '_H_e_a_d_W_t' Weight of the cabbage head, presumably in kg.

     '_V_i_t_C' Ascorbic acid content, in undefined units.


_S_o_u_r_c_e:

     Rawlings, J. O. (1988) _Applied Regression Analysis: A Research
     Tool._ Wadsworth and Brooks/Cole.  Example 8.4, page 219.
     (Rawlings cites the original source as the files of the late Dr
     Gertrude M Cox.)

_R_e_f_e_r_e_n_c_e_s:

     Venables, W. N. and Ripley, B. D. (1999) _Modern Applied
     Statistics with S-PLUS._ Third Edition. Springer.