philion                 package:ISwR                 R Documentation

_D_o_s_e _r_e_s_p_o_n_s_e _d_a_t_a

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

     Four small experiments with the purpose of estimating the EC50 of
     a biological dose-response relation.

_U_s_a_g_e:

     philion

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

     A data frame with 30 observations on the following 3 variables:

     '_e_x_p_e_r_i_m_e_n_t' a numeric vector; codes 1 through 4 denote the
          experiment number.

     '_d_o_s_e' a numeric vector, the dose.

     '_r_e_s_p_o_n_s_e' a numeric vector, the response (counts).

_D_e_t_a_i_l_s:

     These data were discussed on the R{} mailing lists, initially
     suggesting a log-linear Poisson regression, but actually a
     relation like y=ymax/(1+(x/beta)^alpha) is more suitable.

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

     Original data from Vincent Philion, IRDA, Qu\'ebec.

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

     <URL: http://tolstoy.newcastle.edu.au/R/help/03b/1121.html>

