deug                  package:ade4                  R Documentation

_E_x_a_m _m_a_r_k_s _f_o_r _s_o_m_e _s_t_u_d_e_n_t_s

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

     This data set gives the exam results of 104 students in the second
     year of a French University onto 9 subjects.

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

     data(deug)

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

     'deug' is a list of three components.

     _t_a_b is a data frame with 104 students and 9 subjects : Algebra,
          Analysis, Proba, Informatic, Economy, Option1, Option2,
          English, Sport.

     _r_e_s_u_l_t is a factor of 104 components giving the final exam levels
          (A+, A, B, B-, C-, D).

     _c_e_n_t is a vector of required marks by subject to get exactly 10/20
          with a coefficient.

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

     University of Lyon 1

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

     data(deug)
     # decentred PCA
     pca1 <- dudi.pca(deug$tab, scal = FALSE, center = deug$cent, 
         scan = FALSE)
     s.class(pca1$li, deug$result)
     s.arrow(40 * pca1$c1, add.plot = TRUE)

