Geographical Information Systems:
Population and Cenus data
Seconary data- any data collected from another source.
Secondary analysis- is the re-analysis of this data.
Administrative records- includes records such as NHS, school records (publc service records)
Major Government Surveys- decennial census, general lifestyle survey.
Research data- is data collected by other people/organisations.
WHY USE SECONDARY DATASETS?
Data as context- to be able to compare conxtauly against past and present for example.
Data as Comparison- used to compare old trends to current trends, highlighing whether patterns have changed over time or not.
Data as the basis of analysis- major sources of research data i.e. the relatiosip between the geographical variaions in fear of crime and crime incidence.
Understand the previous research- this allows us to highlights the key themes and key players.
What are the Pro's and Cons?
< seconary data is cheap/ often free
< clean and uncoded
< machine readable, often already formated.
<not always appropriate
< out of data
< inconsistant definitions of key words
<take into acount the political framework and bias
The Decennial Census of Population
Census= the total enumration of the population at a single point in time.
provides a national coverage of popualtion
its a legal requiement so is a complete national head count.
> to plan public spending
> to compare across areas
> acess demand
> to look at emoloyment rates, markets and changes in popuation nationally overtime.
>Monitor impact of public policy (looks at equal opppoutunities)
What do we do with census data?
< descrive the demography of an area
< explore the nature of relationships both demographically and social-economically.
< allows us to calualte statistical rates i.e. death
< combine cenus variables into a single overall indec or meaure of deprivation.
- people are vaulable assets
- Baylonians and chinese counted people to manage food demand, milita and tax.
- Egyptians used census' to plan armies of people to build pryamids and to redistribute land in the nile flood plane.
- Greeks and Romans, occured every 5 years, had to return to your place of ogin (males place of orgin)
- Englad has thier first thorough survey in 1086 (domesday book…