ships                  package:MASS                  R Documentation

_S_h_i_p_s _D_a_m_a_g_e _D_a_t_a

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

     Data frame giving the number of damage incidents and aggregate
     months of service by ship type, year of construction, and period
     of operation.

_A_r_g_u_m_e_n_t_s:

    type: type: `"A"' to `"E"' 

    year: year of construction: 1960-64, 65-69, 70-74, 75-79  (coded as
          `"60"', `"65"', `"70"', `"75"') 

  period: period of operation : 1960-74, 75-79 

 service: aggregate months of service 

incidents: number of damage incidents 

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

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

     P. McCullagh and J. A. Nelder, (1983), Generalized Linear Models.
     Chapman & Hall, section 6.3.2, page 137

