Distribution of correlation coefficients (left panel), zero points (middle panel), and slopes (right panel) of the linear fits derived for the oxygen abundance gradients of the final sample using spaxel-wise information (dashed red bars) and the individual H ii  regions (filled blue bars). For both the zero point and slope distributions the lines represent the Gaussian distribution of the data (solid line for spaxels, dashed line for individual H ii  regions), assuming the mean and standard-deviation of the distribution of each analysed parameter and sampled with the same bins.