PR1 Flashcards
It is a small part or representative of a population.
Sample
What are the advantages of sampling?
- Lessens or reduces the costs of the research and making data collection easier and faster.
- Researchers can manipulate and control the data better in using a sample.
- Easier to avoid errors and analyze the data with smaller numbers.
Factors that needs to be considered in choosing a sample
- Length of time allotted
- Types of research being done
- Characteristics of the population being studied
- Resources available
It selects cases based on the ease of accessibility.
Convenience Sampling
It focuses on characteristics of particular subgroups of interest, facilitates comparisons.
Stratified Purposeful Sampling
It brings together people of similar backgrounds and experiences.
Homogeneous Sampling
It looks at random sample. It adds credibility to a sample when the potential purposeful sample is larger than one can handle.
Purposeful Random Sampling
It follows new leads during fieldwork, takes advantage of the unexpected and it is flexible.
Opportunistic or Emergent Sampling
Choosing cases that are information-rich that might reveal a major system weakness. It selects all the cases that meet some criterion.
Criterion Sampling
Identifies manifestations of a theoretical construct of interest so as to elaborate and examine a construct.
Theory based or theoretical sampling
Looking onto negative and positive effects or factors. It seeks cases that are both “expected’ and the “exception” to what is expected.
Confirming and disconfirming sample
It identifies cases of interests from people who know people who know what cases are information – rich.
Snowball or chain Sampling
It consists of the data collection and techniques
Methodology
Two ways to directly collect data
- Direct interaction with individuals on a 1 to 1 basis.
- Direct interaction with individuals in a group setting.
It is the most common format of data collection in a qualitative research.
Interviews