OrchardSprays            package:datasets            R Documentation

_P_o_t_e_n_c_y _o_f _O_r_c_h_a_r_d _S_p_r_a_y_s

_D_e_s_c_r_i_p_t_i_o_n:

     An experiment was conducted to assess the potency of various
     constituents of orchard sprays in repelling honeybees, using a
     Latin square design.

_U_s_a_g_e:

     OrchardSprays

_F_o_r_m_a_t:

     A data frame with 64 observations on 4 variables.

       [,1]  rowpos     numeric  Row of the design
       [,2]  colpos     numeric  Column of the design
       [,3]  treatment  factor   Treatment level
       [,4]  decrease   numeric  Response

_D_e_t_a_i_l_s:

     Individual cells of dry comb were filled with measured amounts of
     lime sulphur emulsion in sucrose solution.  Seven different
     concentrations of lime sulphur ranging from a concentration of
     1/100 to 1/1,562,500 in successive factors of 1/5 were used as
     well as a solution containing no lime sulphur. 

     The responses for the different solutions were obtained by
     releasing 100 bees into the chamber for two hours, and then
     measuring the decrease in volume of the solutions in the various
     cells.

     An 8 x 8 Latin square design was used and the treatments were
     coded as follows:

       A  highest level of lime sulphur
       B  next highest level of lime sulphur
       .  
       .  
       .  
       G  lowest level of lime sulphur
       H  no lime sulphur

_S_o_u_r_c_e:

     Finney, D. J. (1947) _Probit Analysis_. Cambridge.

_R_e_f_e_r_e_n_c_e_s:

     McNeil, D. R. (1977) _Interactive Data Analysis_. New York: Wiley.

_E_x_a_m_p_l_e_s:

     require(graphics)
     pairs(OrchardSprays, main = "OrchardSprays data")