genotype                package:MASS                R Documentation

_R_a_t _G_e_n_o_t_y_p_e _D_a_t_a

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

     Data from a foster feeding experiment with rat mothers and litters
     of four different genotypes: `A', `B', `I' and `J'.  Rice litters
     were separated from their natural mothers at birth and given to
     foster mothers to rear.

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

     data(genotype)

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

     The data frame has the following components:

     `_L_i_t_t_e_r' The genotype of the litter 

     `_M_o_t_h_e_r' The genotype of the foster mother

     `_W_t' Litter average weight gain of the litter, in grams at age 28
          days. (The source states that the within-litter variability
          is negligible.)

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

     Scheffe, H. (1959) The Analysis of Variance Wiley p.140

     Bailey, D. W. (1953) The Inheritance of Maternal Influences on the
     Growth of the Rat. Unpublished Ph.D. thesis, University of
     California. Table B of the Appendix.

