Fig. 2.

Forest plots for intervals $\overline{\widehat{\mathit{\theta }}}\pm 1.96\cdot \widehat{\text{SE}}(\overline{\widehat{\mathit{\theta }}})$, where $\overline{\theta }$ was the sample average of the $\mathcal{R}=1000$ simulation experiments. R_ij was simulated using the Parzen’s method and Y_ij was simulated using the random-intercept method.