What are disadvantages of cluster sampling?

Answer 1

Cluster sampling can lead to higher sampling error compared to other methods like simple random sampling, especially if clusters are not homogeneous. If the selected clusters are not representative of the entire population, the results may be biased. Additionally, logistical challenges may arise when clusters are geographically dispersed, potentially increasing time and costs for data collection. Lastly, the reliance on clusters can obscure variations within individual clusters, limiting the depth of analysis.