CURRENT AFFAIRS

Detailed explanation-1: -Major probability sampling methods are simple random sampling, stratified random sampling, and Cluster sampling, and Systematic sampling.

Detailed explanation-2: -Cluster sampling is a probability sampling method in which you divide a population into clusters, such as districts or schools, and then randomly select some of these clusters as your sample.

Detailed explanation-3: -Cluster sampling is a probability sampling technique where researchers divide the population into multiple groups (clusters) for research. So researchers then select random groups with a simple random or systematic random sampling technique for data collection and analysis.

Detailed explanation-4: -Stratified sampling is based on probability.