Mean and standard deviation diagrams of the unmodified CMASS sample (blue markers and solid lines) and the corresponding 1000 random catalogs (cyan dots and histograms) for four different radii at the central redshift z_cen = 0.52. Results of the magnitude-limited CMASS sample (faint blue markers and dotted lines) and the corresponding 108 random catalogs (brown markers) are also shown for comparison. The deviations of the CMASS sample from the 1000 random data are indicated in units of standard deviation (σ).