search for: v_hat_qqj

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2003 Jun 25
2
within group variance of the coeficients in LME
...its. Pinheiro Bates suggest just looking at the intervals or doing a rather conservative ANOVA test in their book. I have also consultet Raudenbush Bryk on the subject and they suggest using a Chi sqare statistics. It is defined as follows: SUM by j( (beta_hat_qj - y_hat_q0 - sum(y_hat_qs*w_sj))^2/V_hat_qqj) beta are the within 2-level coffecients - got them with the coef() y is a fixed effect or grand mean the sum is for accounting of the level 2 predictors, that I don't presently have, but will the problem is V_hat_qqj which are the variances of the coefficients. I can't get to them. Does...