ducks                  package:boot                  R Documentation

_B_e_h_a_v_i_o_r_a_l _a_n_d _P_l_u_m_a_g_e _C_h_a_r_a_c_t_e_r_i_s_t_i_c_s _o_f _H_y_b_r_i_d _D_u_c_k_s

_D_e_s_c_r_i_p_t_i_o_n:

     The 'ducks' data frame has 11 rows and 2 columns.

     Each row of the data frame represents a male duck who is a second
     generation cross of mallard and pintail ducks.  For 11 such ducks
     a behavioural and plumage index were calculated.  These were
     measured on scales devised for this experiment which was to
     examine whether there was any link between which species the ducks
     resembled physically and which they resembled in behaviour.  The
     scale for the physical appearance ranged from 0 (identical in
     appearance to a mallard) to 20 (identical to a pintail).  The
     behavioural traits of the ducks were on a scale from 0 to 15 with
     lower numbers indicating closer to mallard-like in behaviour.

_U_s_a_g_e:

     ducks

_F_o_r_m_a_t:

     This data frame contains the following columns:

     '_p_l_u_m_a_g_e' The index of physical appearance based on the plumage of
          individual ducks.

     '_b_e_h_a_v_i_o_u_r' The index of behavioural characteristics of the ducks.

_S_o_u_r_c_e:

     The data were obtained from

     Larsen, R.J. and Marx, M.L. (1986)  _An Introduction to
     Mathematical Statistics and its Applications_  (Second Edition).
     Prentice-Hall.

_R_e_f_e_r_e_n_c_e_s:

     Davison, A.C. and Hinkley, D.V. (1997)  _Bootstrap Methods and
     Their Application_. Cambridge University Press.

     Sharpe, R.S., and Johnsgard, P.A. (1966) Inheritance of behavioral
     characters in F2 mallard  x  pintail (_Anas Platyrhynchos L.  x 
     Anas Acuta L._)  hybrids. _Behaviour_, *27*, 259-272.

