Animals package:MASS R Documentation _B_r_a_i_n _a_n_d _B_o_d_y _W_e_i_g_h_t_s _f_o_r _2_8 _S_p_e_c_i_e_s _D_e_s_c_r_i_p_t_i_o_n: Average brain and body weights for 28 species of land animals. _U_s_a_g_e: Animals _F_o_r_m_a_t: '_b_o_d_y' body weight in kg. '_b_r_a_i_n' brain weight in g. _N_o_t_e: The name 'Animals' avoids conflicts with a system dataset 'animals' in S-PLUS 4.5 and later. _S_o_u_r_c_e: P. J. Rousseeuw and A. M. Leroy (1987) _Robust Regression and Outlier Detection._ Wiley, p. 57. _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.