Errors for estimates of the correlation function at r ∈ [2, 3] Mpc h⁻¹ from 1.36 million galaxies and a subsample of 100 k galaxies in a box with side-length 325 Mpc h⁻¹. Upper plot: absolute error Δ₁ shown for the standard RR (solid lines) and for RR_2x3d (dashed lines) pair-counts. Lower plot: absolute error Δ₂ is shown for the standard DR (solid lines), the DR using a low-discrepancy sequence (dotted lines), and for DR_shell also using a low-discrepancy sequence (dashed lines). The black dotted lines are proportional to (upper) and 1/N_2x3d (lower).