What are sampling methods used for?
Techniques to select a subset of individuals from a larger population
Choosing the right method is crucial for the reliability and validity of research findings.
Define population in research.
Totality of research subjects in a defined area
Includes people, animals, or things from which a sample is drawn.
What is a sample?
A smaller group or version of the population from which data is obtained
Represents elements drawn through a definite procedure to generalize results.
List the characteristics of a good sample.
- Representative
- Adequate
- Relevant
A good sample reflects population diversity, is large enough for statistical stability, and is suitable for answering research questions.
What is the sampling process?
Specific process of selecting a subset from the larger population
This is where the researcher will collect data.
Define sampling frame.
Actual, specific list of all members in the population
It is a complete and specific list, while the population is general.
What is the importance of sampling?
Determines generalizability and enhances validity and reliability
Proper sampling is essential for credible research findings.
What factors affect sampling methods?
- Population size
- Resource constraints
- Research objectives
- Potential for sampling bias
These factors influence the choice of sampling method.
What is probability sampling?
Method where every member has a known chance of being selected
Mainly used in quantitative research for statistical inferences.
Name the types of probability sampling.
- Simple Random Sampling
- Systematic Sampling
- Stratified Sampling
- Cluster Sampling
Each type has a specific method of selection.
What is non-probability sampling?
Selection based on non-random criteria or convenience
Used in qualitative research to develop initial understandings.
List the types of non-probability sampling.
- Convenience Sampling
- Purposive Sampling
- Snowball Sampling
- Quota Sampling
Each type serves different research purposes.
The conclusion of selecting the right sampling method is that it aligns research goals with _______.
population characteristics and resources
This enhances the credibility of the findings.
