Lsat                   package:ltm                   R Documentation

_T_h_e _L_a_w _S_c_h_o_o_l _A_d_m_i_s_s_i_o_n _T_e_s_t (_L_S_A_T), _S_e_c_t_i_o_n _V_I

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

     The LSAT is a classical example in educational testing for
     measuring ability traits. This test was designed to measure a
     _single_ latent ability scale.

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

     A data frame with the responses of 1000 individuals to 5
     questions.

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

     This LSAT example is a part of a data set given in Bock and
     Lieberman (1970).

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

     Bartholomew, D., Steel, F., Moustaki, I. and Galbraith, J. (2002)
     _The Analysis and Interpretation of Multivariate Data for Social
     Scientists_. London: Chapman and Hall.

     Bock, R. and Lieberman, M. (1970) Fitting a response model for n
     dichotomously scored items. _Psychometrika_, *35*, 179-197.

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

     ## Descriptive statistics for Lsat data
     descript(Lsat)

