

_T_h_e _E_f_f_e_c_t _o_f _V_i_t_a_m_i_n _C _o_n _T_o_o_t_h _G_r_o_w_t_h _i_n _G_u_i_n_e_a _P_i_g_s

     data(ToothGrowth)

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

     A data frame with 60 observations on 3 variables.

      [,1]      len       numeric      Tooth length
      [,2]      supp      factor       Supplement (VC or OJ).
      [,3]      dose      numeric      Dose in milligrams.

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

     The response is the average length of odontoblasts
     (teeth) in each of 10 guinea pigs.  Three dose levels
     0.5, 1, and 2 mg of juice and acid in the juice were
     used.

     This makes no sense - check the original source.

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

     C. I. Bliss (1952).  The Statistics of Bioassay,
     Academic Press.

_R_e_f_e_r_e_n_c_e_s:

     McNeil, D. R. (1977).  Interactive Data Analysis.  New
     York: Wiley.

