

cement(boot)                                 R Documentation

_C_e_m_e_n_t _C_o_m_p_o_s_i_t_i_o_n _D_a_t_a

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

      x1: The percentage by weight of tricalcium aluminate
          in the sample.

      x2: The percentage by weight of tricalcium silictate
          in the sample.

      x3: The percentage by weight of tricalcium alumino
          ferrite in the sample.

      x4: The percentage by weight of dicalcium silictate in
          the sample.

       y: The heat (in calories per gramme of cement)
          evolved while the sample was setting.

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

     The `cement' data frame has 13 rows and 5 columns.

     13 samples of Portland cement were set. For each sam-
     ple, the percentages of the four main chemical ingredi-
     ents was accurately measured.  While the cement was
     setting the amount of heat evolved was also measured.

_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

     Woods, H., Steinour, H.H. and Starke, H.R. (1932)
     Effect of composition of Portland cement on heat
     evolved during hardening.  Industrial Engineering and
     Chemistry, 24, 1207-1214.

_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.

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

