secondary and other aspects of research Flashcards
what is the sampling process?
way in which we select ppl who will take part in the research
what is the target/ survey population?
grp we are interested in researching but no time and money to include everyone
what is a sampling frame?
list of all ppl in the target pop, not always avalaible for all topics .eg drug dealers
what is sampling method?
the way you select names from sampling frame, e.g random sampling
sample
ppl selected to actually do the research
representative
reflects the diff grps in the target population
non representative
doesnt reflect the diff grps in target pop
what is random sampling
(the start of reprsentative sampling methods)
-equal chance of being chosen
-lottery method/computer randomiser
what are advatges of random and disadv
ad:
-no bias
-researcher has no infulence
dis:
-not very representative
what is QUASI/SYSTEMATIC?
every nth person chosen from the list
adv and disadv of quasi/systematic?
ad:
-no bias
disadv:
- not very represenataive, may choose same gender or ages
what is stratified?
-sampling frame divided into different smaller frames
-proportions chosen from each one matches target pop
-names chosen at random
diadv and adv of stratified?
ad:
-most representaive method
disadv:
-info you need may not be available/accessible
whats quota sampling?
-ensure certain grps are in one sample
-decide how many grps you want in each category
-physically go out and approach them
dis and adv of sampling?
adv:
-useful way to gather a represetative sample
-used when no sample frame available
dis:
- some bias can occur; approach those who look most friendly
what is snowball sampling?
(non representative methods now)
when u have 1 or 2 contacts who can take part then you intorduce to others
- so sample grows
adv and dis of snowball?
adv:
-reach other grps easily e.g crimanals
dis:
-not very reprsentative, more likely from a specfic area and baised
what is volunteer sampling?
advertise so respondents come forward
adv and dis of volunteer
adv:
-useful to gain access to certain individuals
dis:
-may not be very representative, low response rate and paricular grp likely to respond
whats opportunity sampling?
ask certain individuals e.g homeless go toa homeless shelter
adv and dis of opportunity
adv:
-guarenteed to find specfic indivualds
dis:
- respondents only from one place. not very reprsentative
Secondary methods:
What are stattisitcs and examples?
Statistcs can be official (gov) or non official
exmaples:
-census
-sucicide rates
-crime
-unemployment
(quantatative)
what is content analysis and examples?
content analysis is quantative analysis of media content
exmaple:
-internet
-videogames
-films and DVDS
what are documents and exmaples?
documents are qualitative analysis of piblished documents
exmaples:
-public= gov reports
-hsitorical= parish, census data
-personal= diaries and letters
what are official statistics?
quantative data gathered by gov and published
what are non official statistics?
quantitative data published by organisations other than government e.g charities
two ways official statistics can be collected?
-numerical data
- birth certificates, crime registration
-official surveys- census and crime surveys