

gravity(boot)                                R Documentation

_A_c_c_e_l_e_r_a_t_i_o_n _D_u_e _t_o _G_r_a_v_i_t_y

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

       g: The deviation of the estimate from 980.000 cen-
          timetres per second squared.

  series: A factor describing from which experiment the
          estimate was derived.

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

     The `gravity' data frame has 81 rows and 2 columns.

     The `grav' data set has 26 rows and 2 columns.

     Between May 1934 and July 1935, the National Bureau of
     Standards in Washington D.C. conducted a series of
     experiments to estimate the acceleration due to grav-
     ity, g, at Washington.  Each experiment produced a num-
     ber of replicate estimates of g using the same method-
     ology.  Although the basic method remained the same for
     all experiments, that of the reversible pendulum, there
     were changes in configuration.

     The `gravity' dataframe contains the data from all
     eight experiments.  The `grav' dataframe contains the
     data from the experiments 7 and 8.  The data are
     expressed as deviations from 980.000 in centimetres per
     second squared.

_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

     Cressie, N. (1982) Playing safe with misweighted means.
     Journal of the American Statistical Association, 77,
     754-759.

_O_T_H_E_R _R_E_F_E_R_E_N_C_E_S_:

     Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Meth-
     ods and Their Application. Cambridge University Press.

