

salinity(boot)                               R Documentation

_W_a_t_e_r _S_a_l_i_n_i_t_y _a_n_d _R_i_v_e_r _D_i_s_c_h_a_r_g_e_.

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

     sal: The average salinity of the water over two weeks.

     lag: The average salinity of the water lagged two
          weeks.  Since only spring is used, the value of
          `lag' is not always equal to the previous value of
          `sal'.

   trend: A factor indicating in which of the 6 biweekly
          periods between March and May, the observations
          were taken. The levels of the factor are from 0 to
          5 with 0 being the first two weeks in March.

     dis: The amount of river discharge during the two weeks
          for which `sal' is the average salinity.

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

     The `salinity' data frame has 28 rows and 4 columns.

     Biweekly averages of the water salinity and river dis-
     charge in Pamlico Sound, North Carolina were recorded
     between the years 1972 and 1977.  The data in this set
     consists only of those measurements in March, April and
     May.

_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

     Ruppert, D. and Carroll, R.J. (1980) Trimmed least
     squares estimation in the linear model.  Journal of the
     American Statistical Association, 75, 828-838.

_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.

