Scatter in the Δz/ (1 + z) values for objects in a narrow rest-frame U−V color bin, as a function of the median color for the bin (top panel) and for objects in a narrow B-band absolute magnitude bin, as a function of the median magnitude for the bin (bottom panel). In both cases the bins are built to contain a fixed number of objects (500), and they are not statistically independent since they partly overlap each other.