VarCorr                 package:lme4                 R Documentation

_E_x_t_r_a_c_t _v_a_r_i_a_n_c_e _a_n_d _c_o_r_r_e_l_a_t_i_o_n _c_o_m_p_o_n_e_n_t_s

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

     This function calculates the estimated variances, standard
     deviations, and correlations between the random-effects terms in a
     linear mixed-effects model, of class `lme', or a generalized
     linear mixed-effects model, of class `glmm'. When appropriate, the
     within-group error variance and standard deviation are also
     calculated.

_V_a_l_u_e:

     an object of class `VarCorr'.

_A_u_t_h_o_r(_s):

     Saikat DebRoy saikat@stat.wisc.edu and Douglas Bates
     bates@stat.wisc.edu

_S_e_e _A_l_s_o:

     `lme', `GLMM', `VarCorr-class'

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

     data(bdf, package = "nlme")
     fm <- lme(langPOST ~ IQ.ver.cen + avg.IQ.ver.cen, data = bdf,
               random = ~ IQ.ver.cen | schoolNR)
     VarCorr(fm)

