Quantitive Research: background - Research designs in the empirical-analytical tradition - The survey
12 important questions on Quantitive Research: background - Research designs in the empirical-analytical tradition - The survey
What is a survey?
What are the differenced between theoretical and oparational population and sampling frame?
Operational population; all units who could be investigated if you apply a limitation to them (e.g. 15-60 females).
Sample frame; drawn from the operational population. This is a list of items or people from the population of which a sample is taken.
What are the different types of sampling?
- simple sampling
- systematic sampling; systematic random
- stratified sampling; random within separated groups, called strata
- sub sample; a smaller proportion of an original is made
- cluster sampling; defining random clusters and then random sampling of clusters
- Multistage sampling; Taking samples in stages using smaller and smaller sampling units at each stage.
- Non-probability sampling; sample of a larger population is chosen based on the reseacher's subjective judgement.
- Quata sampling; individuals who are chosen out of a specific subgroup.
- purposive
- volunteer
- Haphazard
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How does the sample size influences reliability?
Why is it a misunderstanding you must include a certain percentage of the population in order to be representative for the population?
What are three ways you can decrease the chance of non-response?
- Do not give up
- In case of oral questionairre, send a short introduction letter to proof identity of the interviewer.
What is the difference between proportional and disproportional sampling?
Disproportional sampling refers to drawing a sample within each stratum to ensure that smaller groups are also represented in the sample.
Two types of populations
2. Operational population: the selected segment(s) of the population that will be investigated
from the entire population. The operational population forms the basis from which the sample is drawn.
A systematic sample
A non-probability sample is 'quota sampling':
Possibilities to minimise non-response
- Provide good training for interviewers;
- Do not give up immediately if the respondent refuses;
- In the case of an oral survey, send a clear introductory letter beforehand and provide the interviewer with identification.
Time series analysis
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