When measuring deprivation in districts, six separate measures have been devised to take into account the variation in population size and concentration of deprivation.

The average of super output area (SOA) ranks is the population weighted average of the combined ranks for the SOAs in a district.
This measure summarises the district taken as a whole, including both deprived and less deprived SOAs. It is calculated by averaging all of the SOA ranks in each district. For the purpose of calculating this score, the SOAs are ranked so that the most deprived SOA is given the rank of 32,482. The SOA ranks are population weighted within a district to take account of the fact that SOA size can vary.

The other four of the five measures of deprivation in districts are:
  • income scale/employment scale
  • average of SOA sores
  • extent
  • local concentration

Information taken from ‘The English Indices of Deprivation 2004’, published by the Office of the Deputy Prime Minister (ODPM).