Classification of the sample according to radio loudness. The figure is the same as Fig. 7 in Lal & Ho (2010). The locations of our objects are shown with colored triangles. The cross symbols come from the AGN sample of Xu et al. (1999); the open green diamonds represent their radio-intermediate sources. The Lal & Ho (2010) sample of QSO2 at 0.3 ≤ z ≤ 0.7 is represented with filled red circles. Open blue triangles are upper limits.