Bottom panel: comparison between measured in various mock subsamples and measured in the VIPERS catalogue. Different symbols and colours refer to results obtained with cells of different sizes, as indicated in the plot. The subsamples were obtained by applying the same magnitude and redshift cuts used in this section and indicated in Table 2. The error bars represent 1σ scatter from the mocks. Top panel: comparison among the non-linear parameters measured in the mocks and in the real sub-catalogues.