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Definitions for cluster sampling. Cluster sampling. Cluster sampling is a sampling technique used when natural but relatively homogeneous groupings are evident in a statistical population. It is often used in marketing research.
Clustering is the grouping of a particular set of objects based on their characteristics, aggregating them according to their similarities. Regarding to data mining, this metodology partitions the data implementing a specific join algorithm, most suitable for the desired information analysis. This clustering analysis allows an object not to be part of a cluster, or strictly belong to it, calling this type of grouping hard partitioning.