grades                  package:SIN                  R Documentation

_S_c_h_o_o_l _G_r_a_d_e_s

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

     The data consists of the test results of 220 boys in the 6 school
     subjects:  

        *  Gaelic,

        *  English,

        *  history,

        *  arithmetic,

        *  algebra,

        *  geometry.

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

     data(grades)

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

     A list providing a summary of the data. The list contains:

       'grades$means'   :  the mean vector,
       'grades$stddev'  :  the vector of standard deviations,
       'grades$corr'    :  the correlation matrix, and
       'grades$n'       :  the sample size.

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

     Whittaker, J. (1990) _Graphical models in applied multivariate
     statistics_. Chichester: Wiley. (See p.266).

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

     data(grades)
     grades$means
     grades$stddev
     grades$corr
     grades$n

