

coop(MASS)                                   R Documentation

_C_o_-_o_p_e_r_a_t_i_v_e _T_r_i_a_l _i_n _A_n_a_l_y_t_i_c_a_l _C_h_e_m_i_s_t_r_y

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

     Seven specimens were sent to 6 laboratories in 3 sepa-
     rate batches and each analysed for Analyte.  Each anal-
     ysis was duplicated.

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

     Lab: Laboratory, `L1', `L2', ...{}, `L6'.

     Spc: Specimen, `S1', `S2', ...{}, `S6'.

     Bat: Batch, `B1', `B2', `B3' (nested within `Spc/Lab'),

    Conc: Concentration of Analyte in g/kg.

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

     This data frame contains the following columns:

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

     Analytical Methods Committee (1987) Recommendations for
     the conduct and interpretation of co-operative trials,
     The Analyst 112, 679-686.

_S_e_e _A_l_s_o_:

     `chem', `abbey'.

