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The table shows that some of the counties have some of their own districts as most similar areas. It means that the relative proportions of the same Mosaic Types within the two populations are arithmetically closer to each other than almost every other population. There are two reasons why it works like this:
The table shows that some of the counties have some of their own districts as most similar areas. It means that the relative proportions of the same Mosaic Types within the two populations are arithmetically closer to each other than almost every other population. There are two reasons why it works like this:
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*If it didn't, then areas could only be weighted relative to other areas which were at the same level of the geography hierarchy. This would mean that counties could only be similar to other counties or to unitaries, but never to a district; conversely, districts could never be similar to any county, only unitaries or other districts; and unitaries would have different similarity lists depending on whether they were selected at the county level of the hierarchy or the district level.
+
*If it didn't, then areas could only be weighted relative to other areas which were at the same level of the [[geography hierarchy]]. This would mean that counties could only be similar to other counties or to unitaries, but never to a district; conversely, districts could never be similar to any county, only unitaries or other districts; and unitaries would have different similarity lists depending on whether they were selected at the county level of the hierarchy or the district level.
-
*The existing approach does provide useful information: for example, East Devon has a mix of communities which is very similar to the overall mix of Devon as a whole (so does Teignbridge), but other districts of Devon are a lot less typical of the country. Exeter City is the least 'Devon-like' area of Devon, as it is 117th most similar to Devon.  
+
*The existing approach does provide useful information: for example, East Devon has a mix of communities which are very similar to the overall mix of Devon as a whole (so does Teignbridge), but other districts of Devon are a lot less typical of the country. Exeter City is the least 'Devon-like' area of Devon, as it is 117th most similar to Devon.  
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Revision as of 08:10, 23 October 2013

MAST contains a special feature for taking any given local authority area and identifying which other areas contain the most socio-demographically similar resident communities. This is extremely useful for evaluating reports based on authority areas, alongside other areas to which they can be considered reasonably comparable.

Contents

How to use Similar Authorities

Overview

In any saved report which has a filter based on a dimension which uses the Geography hierarchy, the Show Similar Authorities link will appear automatically whenever a single authority area is selected. The link displays a list of the top ten authorities which are most similar to the selected authority area. Clicking on the name of an authority in the list will change the report filter accordingly.

Details

  • If the area selected does not correspond to a single local authority, the Show Similar Authorities link will not be displayed. Consequently, the geographical filter used must include only a single element beginning with "C_", "U_" or "L_". This means the feature cannot be applied to government office regions, nor to police force areas or geographical counties unless they coincide precisely with a single council area.
  • If more than one Geography dimension is present on the Filter tab, then the first such dimension added will be used.
  • Changes to local authority boundaries, such as those caused by Local Government Re-organisation of former two tier county councils, can only be applied in MAST when corresponding STATS19 data is released. For instance, new unitary authorities created in January 2009 were only included in MAST alongside 2009 STATS19 data.

Calculation Technique

Experian, the creators of Mosaic Public Sector, has calculated the degree of socio-economic similarity of every local authority area in Britain to every other such area, on the basis of proportions of proximate Mosaic Types within the resident populations. This analysis was undertaken specially for MAST Project.

It should be noted that there is no necessary relationship between size or location on one hand, and socio-demographic similarity on the other. Thus, it is entirely possible for an area to have socio-demographic cognates which are much larger or smaller, which exist in different tiers of government and/or are are located in totally different areas of the country.

This diagram gives an illustration of how certain Mosaic Types are considered closer to other types, even if they do not fall within the same Mosaic Group.

Image:TypeTree_D.png

Two Tier Counties

MAST is currently unable to show the Most Similar Authorities for two-tier counties. The lookup table below provides the authority names for the top ten most similar authorities for two tier counties.

The table shows that some of the counties have some of their own districts as most similar areas. It means that the relative proportions of the same Mosaic Types within the two populations are arithmetically closer to each other than almost every other population. There are two reasons why it works like this:

  • If it didn't, then areas could only be weighted relative to other areas which were at the same level of the geography hierarchy. This would mean that counties could only be similar to other counties or to unitaries, but never to a district; conversely, districts could never be similar to any county, only unitaries or other districts; and unitaries would have different similarity lists depending on whether they were selected at the county level of the hierarchy or the district level.
  • The existing approach does provide useful information: for example, East Devon has a mix of communities which are very similar to the overall mix of Devon as a whole (so does Teignbridge), but other districts of Devon are a lot less typical of the country. Exeter City is the least 'Devon-like' area of Devon, as it is 117th most similar to Devon.
Top Ten Most Similar Authorities for Two Tier Counties
Tow Tier County 1 2 3 4 5 6 7 8 9 10
Buckinghamshire Wycombe South Oxfordshire Tandridge Surrey Sevenoaks Vale of White Horse East Hampshire Mid Sussex Surrey Heath Guildford
Cambridgeshire Oxfordshire Hampshire Maidstone Colchester Bedford Wiltshire Huntingdonshire Essex Bath and North East Somerset Gloucestershire
Cumbria Allerdale Carlisle Bassetlaw Carmarthenshire Northumberland Newark and Sherwood Boston Nottinghamshire Derbyshire Wrexham
Derbyshire Nottinghamshire Bassetlaw Newcastle-under-Lyme North West Leicestershire Staffordshire Amber Valley High Peak East Staffordshire Chesterfield Wyre Forest
Devon Cornwall South Lakeland Denbighshire North Devon North Yorkshire North Dorset Somerset West Dorset Teignbridge Dorset
Dorset Purbeck Teignbridge West Dorset South Lakeland East Sussex Arun Devon New Forest Lewes East Devon
East Sussex Lewes Dorset Arun Denbighshire West Sussex Conwy Devon Eastbourne Teignbridge Shepway
Essex Maidstone Kent Colchester Hampshire Cambridgeshire Chelmsford Tonbridge and Malling Braintree Worcestershire Bedford
Gloucestershire Worcestershire Suffolk Kent Warwickshire Wiltshire Stroud Stafford Taunton Deane South Kesteven Tewkesbury
Hampshire Test Valley Tonbridge and Malling Maidstone Wiltshire Cambridgeshire West Berkshire Tewkesbury Essex Bedford Oxfordshire
Hertfordshire Dacorum North Hertfordshire Three Rivers Hertsmere Epping Forest Reigate and Banstead Welwyn Hatfield East Hertfordshire Oxfordshire Chelmsford
Kent Gloucestershire Worcestershire Warwickshire The Vale of Glamorgan Essex Suffolk Wiltshire Colchester North Somerset Taunton Deane
Lancashire Nottinghamshire East Staffordshire Kirklees Bury Wirral Bolton Kettering Broxtowe Derbyshire Derby
Leicestershire Charnwood Hinckley and Bosworth Chorley Rugby Staffordshire Warwickshire East Northamptonshire Wellingborough North West Leicestershire Gedling
Lincolnshire Norfolk Somerset West Lindsey Suffolk East Riding of Yorkshire King's Lynn and West Norfolk South Somerset Sedgemoor Breckland North Yorkshire
Norfolk Lincolnshire King's Lynn and West Norfolk Suffolk Breckland Somerset North Yorkshire South Somerset West Lindsey Shropshire Gloucestershire
North Yorkshire Shropshire Somerset Mendip Suffolk Devon Craven Gloucestershire Hambleton Lincolnshire Ribble Valley
Northamptonshire East Northamptonshire Warwickshire Worcestershire Warrington Wellingborough Peterborough Staffordshire South Kesteven Northampton Charnwood
Nottinghamshire Staffordshire Derbyshire Wellingborough Broxtowe Newcastle-under-Lyme Lancashire Wyre Forest Bassetlaw Derby Newport
Oxfordshire Cambridgeshire Warwick East Hertfordshire Hampshire Bath and North East Somerset West Berkshire North Hertfordshire Maidstone Aylesbury Vale Colchester
Somerset South Somerset Mendip Suffolk North Yorkshire Sedgemoor Lincolnshire Shropshire Taunton Deane East Riding of Yorkshire Gloucestershire
Staffordshire Nottinghamshire Wellingborough Flintshire Wyre Forest Leicestershire Warwickshire North West Leicestershire Swale North Warwickshire Hinckley and Bosworth
Suffolk Gloucestershire Somerset Lincolnshire Taunton Deane South Kesteven Worcestershire East Riding of Yorkshire Mendip Sedgemoor North Yorkshire
Surrey Reigate and Banstead Windsor and Maidenhead Woking Guildford Tandridge Wycombe Buckinghamshire Mid Sussex Brentwood Sevenoaks
Warwickshire Worcestershire Gloucestershire Kent The Vale of Glamorgan Northamptonshire Staffordshire Staffird Lichfield Charnwood Leicestershire
West Sussex Kent Poole East Sussex Essex Hampshire Notrh Somerset Harrogate New Forest Taunton Deane Lewes
Worcestershire Warwickshire Gloucestershire Stafford Kent South Kesteven Stroud Suffolk Lichfield Wiltshire Northamptonshire
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