phones                 package:boot                 R Documentation

_B_e_l_g_i_u_m _P_h_o_n_e _C_a_l_l_s _1_9_5_0-_1_9_7_3

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

    year: The last two digits of the year. 

   calls: The number of telephone calls made (in millions of calls). 

_S_U_M_M_A_R_Y:

     The `phones' data frame has 24 rows and 2 columns.

_D_A_T_A _D_E_S_C_R_I_P_T_I_O_N:

     This data frame contains the following columns:

_S_O_U_R_C_E:

     The data were obtained from

     Rousseeuw, P.J. and Leroy, A.M. (1987)  Robust Regression and
     Outlier Detection. John Wiley.

_O_T_H_E_R _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.

     Venables, W.N. and Ripley, B.D. (1994)  Modern Applied Statistics
     with Splus. Springer-Verlag

