Quantifying the Colour-Dependent Stochasticity of Large-Scale Structure
  We address the question of whether massive red and blue galaxies trace the
same large-scale structure at z~0.6 using the CMASS sample of galaxies from
Data Release 12 of the Sloan Digital Sky Survey III. After splitting the
catalog into subsamples of red and blue galaxies using a simple colour cut, we
measure the clustering of both subsamples and construct the correlation
coefficient, r, using two statistics. The correlation coefficient quantifies
the stochasticity between the two subsamples, which we examine over
intermediate scales (20 < R < 100 Mpc/h). We find that on these intermediate
scales, the correlation coefficient is consistent with 1; in particular, we
find r > 0.95 taking into account both statistics and r > 0.974 using the
favored statistic.
