Stratified Sampling

Definition

Stratified sampling is a method used in archaeology and other fields where the population is divided into distinct subgroups or strata, and samples are taken from each of these groups. This technique ensures that different segments of the population are represented in the sample, which helps in gaining more accurate insights into the overall characteristics of the archaeological site being studied. By using stratified sampling, researchers can minimize biases and improve the reliability of their findings.

5 Must Know Facts For Your Next Test

1. Stratified sampling allows for a more representative sample by ensuring that all significant subgroups are included, which is especially important in heterogeneous sites.
2. This method can improve the precision of estimates related to artifact distribution and density across different areas of a site.
3. When using stratified sampling, researchers often identify strata based on characteristics like soil type, artifact density, or historical significance.
4. Stratified sampling can be combined with other methods, such as random sampling within each stratum, to enhance data collection strategies.
5. The results from stratified sampling can help inform excavation strategies by highlighting areas of interest that may require more focused investigation.

Review Questions

• How does stratified sampling contribute to the accuracy of archaeological research?
  • Stratified sampling enhances the accuracy of archaeological research by ensuring that all relevant subgroups within a site are represented in the sample. This method reduces potential biases that could arise if only certain areas were surveyed. By analyzing diverse strata, researchers can draw more reliable conclusions about artifact distribution, density, and the overall characteristics of the site.
• Discuss the advantages of using stratified sampling over simple random sampling in archaeological excavation.
  • Stratified sampling offers several advantages over simple random sampling, particularly in heterogeneous archaeological sites where different areas may have distinct characteristics. By dividing the site into strata based on features like soil type or artifact concentration, researchers can ensure that all important segments are represented. This leads to improved accuracy and representativeness in the collected data, allowing for better understanding of the site's context and history.
• Evaluate the impact of stratified sampling on excavation strategies and future research directions in archaeology.
  • Stratified sampling significantly impacts excavation strategies by identifying which areas of a site warrant more intensive investigation based on preliminary findings. By revealing variations in artifact distribution across strata, this method directs archaeologists to focus their efforts on regions that may yield richer historical insights. Consequently, it shapes future research directions by guiding hypothesis formation and influencing how subsequent excavations are planned to maximize the understanding of past human activities.

Related terms

Random Sampling: A sampling technique where each member of the population has an equal chance of being selected, which helps eliminate selection bias.

Contextual Analysis: The study of artifacts and features within their specific context to understand their significance and relationships within an archaeological site.

Site Stratigraphy: The layering of soil and artifacts at an archaeological site that provides chronological information about human activity and environmental changes.