wine                package:Fahrmeir                R Documentation

_B_i_t_t_e_r_n_e_s_s _o_f _W_h_i_t_e _W_i_n_e_s

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

     In a study on the bitterness of white wine it is of interest
     wheater treatments that can be controlleds during pressing the
     grapes influence the bitterness of wines.  The two factors
     considered are the temperature and the admission of contact with
     skin when pressing the grapes.

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

     data(wine)

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

     A data frame with 72 observations on the following 5 variables.

     _t_e_m_p a factor, temperature,  with levels 'high' 'low'

     _c_o_n_t_a_c_t a factor with levels 'no' 'yes'

     _b_o_t_t_l_e a factor with levels '1' '2' '3' '4'  '5' '6' '7' '8'

     _j_u_d_g_e a factor with levels '1' '2' '3' '4'  '5' '6' '7' '8' '9'

     _s_c_o_r_e numeric, ordinal score, from '1'=nonbitter to '5'=very
          bitter 

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

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

     Ludwig Fahrmeir, Gerhard Tutz (1994):  Multivariate Statistical
     Modelling Based on Generalized Linear Models. Springer Series in
     Statistics.  Springer Verlag. New-York  Berlin Heidelberg

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

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

     str(wine) 
     summary(wine)

