This is reflected in the simple mean of the sample, which is of the order of 13, 7 and 22 in the 2010 round for the lower, medium and high education groups, respectively. These values are interpreted as the percentage of each group's population that would have to be redistributed geographically to achieve zero segregation, which would be when the territorial distribution of the two groups being compared is identical. These figures confirm the exclusive location pattern of the best-off groups in the region's cities, tending as they do to live in areas that are fairly well connected to the commercial and financial centres of their cities, are fairly self-sufficient in services, and have high land and housing prices, which have the effect of expelling poor households or impeding the entry of poor individuals or households. The extent to which these well-to-do groups are sealed off has serious implications for their connections with the rest of society, and it is also a powerful mechanism for reproducing wealth and concentrating economic power. The text presents the results for the more aggregate scale, the messages being in agreement in both cases.