Comparison of the relative difference for (a) galaxy bias and (b) cross-correlation amplitude estimated from the average power spectra of 300 Monte Carlo simulations. The blue circles and red squares denote the values before and after correction for redshift bin mismatch, respectively. The error bars on the data points correspond to the standard error from the average spectra, and the standard deviations σ(b) and σ(A) correspond to a single realisation.