Sampling• Easiest method of social investigation• Statistical method of obtaining representativedata or observation from a large group.• Selection of the sample• Collection of information• Drawing inferences
Sample• Entities or observation randomly selected torepresent the behavior and characteristics of theentire population.
Features• Representativeness• Adequacy• Independence• Homogeneity• Lack of bias• Smallness in size• Accuracy and completeness
Sample Unit• A single section selected to research and gatherstatistics of the whole.
Sample frame• Set of information used to identify the sample.• Includes numerical identifier for each individualelement.• Information about the characteristics.• Aid to analysis of individuals.
Population• All elements including or units that meet theselection criteria for a group to be studied and fromwhich a representative sample taken for detailedexamination• Total of all population is known as universe.
Sensus• General: Official counting of regions or nationspeople and compilation of economic, social andother data, usually for formulation of developmentpolicies and plans.• Statistics: Survey of entire population, as opposedto a sample survey