familiar fieldwork - how does quality of life vary in Reigate Flashcards
what is the Index of Multiple Deprivation (IMD)
a UK government qualitative study measuring deprivation at a small-area level across England
what makes the choice of location a suitable study area
- is local to school
- can return easily (to repeat measurements)
- low risk
- range of urban land uses within a small area
what is sampling
a short ute method for investigating a whole population
why do we use sampling
there isn’t enough time, money, energy, man-power, equipment to measure everything within a site
definition of random sampling
where samples are chosen fairly randomly and every person has an equal chance of being selected
advantages of random sampling
- easy to implement
- unbiased
disadvantages of random sampling
can lead to poor representation of the overall population if large areas are not hit by numbers generated
systematic sampling definition
means working to a system to collect data (eg. every 10m along the road)
disadvantages of systematic sampling
over or under representation of particular patterns
advantages of systematic sampling
- easy to execute and understand
- control and sense of process
- clustered selection eliminated
stratified sampling definition
means collecting a sample made up of different parts, for example deliberately selecting samples of different people within an area so you include the whole range of people found there
advantages of stratified sampling
ensures each sub ground within the population receives proper representation within the sample
disadvantages of stratified sampling
- can be difficult and time consuming to select relevant groups
- can require more time to analyse stratified data
primary data definition
data collected that is original and collected for first time (eg. fieldwork data)
secondary data definition
data collected by using already available sources