Question

 

What is sampling? Explain the different methods of probability sampling.

08 Sep 2025
Answer :
Word Count : 1087
Sampling is a process used in research, monitoring, and evaluation to select a subset of individuals, items, or units from a larger population in order to make inferences about that population. It is an essential part of data collection because it is often impractical, expensive, or time-consuming to study an entire population. The goal of sampling is to obtain a sample that is representative of the population so that conclusions drawn from the sample can be generalized to the entire population with a known level of accuracy. In the context of monitoring and evaluation of projects and programmes, sampling helps in assessing performance, outcomes, and impacts of interventions without the need for complete enumeration. A well-designed sampling plan reduces bias, ensures reliability, and increases the credibility of the findings that inform policy decisions and future programme design. Probability sampling is a technique where every unit in the population has a known, non-zero chance of being selected. This is considered a scientifically rigorous method of sampling because it minimizes selection bias and allows for the calculation of sampling error, thereby improving the ___ __________ _______ _____ __________ ________ __________.
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