VonBort                 package:vcd                 R Documentation

_V_o_n _B_o_r_t_k_i_e_w_i_c_z _H_o_r_s_e _K_i_c_k_s _D_a_t_a

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

     Data from von Bortkiewicz (1898), given by Andrews & Herzberg
     (1985), on number of deaths by horse or mule kicks in 14 corps of
     the Prussian army.

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

     data(VonBort)

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

     A data frame with 280 observations and 4 variables.

     _d_e_a_t_h_s number of deaths.

     _y_e_a_r year of the deaths.

     _c_o_r_p_s factor indicating the corps.

     _f_i_s_h_e_r factor indicating whether the corresponding corps was
          considered by Fisher (1925) or not.

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

     Michael Friendly (2000), Visualizing Categorical Data: <URL:
     http://euclid.psych.yorku.ca/ftp/sas/vcd/catdata/vonbort.sas>

_R_e_f_e_r_e_n_c_e_s:

     D. F. Andrews & A. M. Herzberg (1985), _Data: A Collection of
     Problems from Many Fields for the Student and Research Worker_.
     Springer-Verlag, New York, NY.

     R. A. Fisher (1925), _Statistical Methods for Research Workers_.
     Oliver & Boyd, London.

     L. von Bortkiewicz (1898), _Das Gesetz der kleinen Zahlen_.
     Teubner, Leipzig.

     M. Friendly (2000), _Visualizing Categorical Data_. SAS Institute,
     Cary, NC.

_S_e_e _A_l_s_o:

     'HorseKicks'

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

     data(VonBort)
     ## HorseKicks data
     xtabs(~ deaths, data = VonBort, subset = fisher == "yes")

