Difference Between Stratified and Random Sampling Methods:
Stratified and random sampling are two distinct techniques used in the process of selecting a representative sample from a larger population. They differ in their approach and purpose, each suited to specific research objectives and situations. Here's a detailed description of the differences between these two sampling methods:
Stratified Sampling:
1. Definition:
- Stratified sampling is a sampling method that divides the population into subgroups or strata based on certain characteristics or attributes that are relevant to the research question. Then, a random sample is independently selected from each stratum.
2. Purpose:
- Stratified sampling is used when researchers want to ensure that the sample accurately represents the diversity within the population with respect to specific characteristics or variables of interest. It is especially useful when there are significant differences or variations within the population based on these characteristics.
3. Process:
- Dividing the population into strata: Researchers identify the relevant strata based on their research objectives. For example, in a study of education outcomes, strata might include grade levels (e.g., elementary, middle, high school).
- Random sampling within each stratum: A random sample is independently selected from....
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