SRAssay               package:mratios               R Documentation

_S_l_o_p_e _r_a_t_i_o _a_s_s_a_y _o_f _p_a_n_t_h_o_t_e_n_i_c _a_c_i_d _c_o_n_t_e_n_t_s _i_n _p_l_a_n_t _t_i_s_s_u_e_s

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

     Content of panthotenic acid in a standard and three unknown
     samples were measured. The response variable is the titer of a
     sample to pH 6.8.

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

     data(SRAssay)

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

     A data frame with 34 observations on the following 3 variables.

     _R_e_s_p_o_n_s_e a numeric vector, containing the response variable (titer
          to pH 6.8)

     _T_r_e_a_t_m_e_n_t a factor with levels St, U1, U2 and U3, specifying the
          standard and 3 unknown samples, respectively

     _D_o_s_e a numeric vector

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

     _Jensen, D.R. (1989)._ Joint confidence sets in multiple dilution
     assays.  _Biometrical Journal 31, 841-853._

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

     Data originally from  _Bliss, C.I. (1952)._ The Statistics of
     Bioassay. Academic Press, New York.

_E_x_a_m_p_l_e_s:

     library(mratios)

     data(SRAssay)

     str(SRAssay)

     plot(Response~Dose, data=SRAssay)

     # library(lattice)
     # xyplot(Response~Dose|Treatment, data=SRAssay)

     # see ?sci.ratio.gen for  the analysis of this dataset

