condroz          package:robustbase          R Documentation(latin1)

_C_o_n_d_r_o_z _D_a_t_a

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

     Dataset with pH-value and Calcium content in soil samples,
     collected in different communities of the Condroz region in
     Belgium. The data pertain to a subset of 428 samples with a
     pH-value between 7.0 and 7.5.

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

     data(condroz)

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

     A data frame with 428 observations on the following 2 variables.

     '_C_a' Calcium content of the soil sample

     '_p_H' pH value of the soil sample

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

     For more information on the dataset, cf. Goegebeur et al. (2005).

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

     Hubert and Vandervieren (2006), p. 10. This dataset is also
     studied in Vandewalle et al. (2004).

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

     Goegebeur, Y., Planchon, V., Beirlant, J., Oger, R. (2005).
     Quality Assesment of Pedochemical Data Using Extreme Value
     Methodology, Journal of Applied Science, 5, p. 1092-1102.

     Hubert, M. and Vandervieren, E. (2006). An Adjusted Boxplot for
     Skewed Distributions, Technical Report TR-06-11, KULeuven, Section
     of Statistics, Leuven. <URL:
     http://wis.kuleuven.be/stat/robust/Papers/TR0611.pdf>

     Vandewalle, B., Beirlant, J., Hubert, M. (2004). A robust
     estimator of the tail index based on an exponential regression
     model, in Hubert, M., Pison G., Struyf, A. and S. Van Aelst, ed.,
     Theory and Applications of Recent Robust Methods, Birkhuser,
     Basel, p. 367-376.

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

       adjbox(condroz$Ca)

