Sampling-Definition and types.

Sampling is the process of selecting a subset of individuals or elements from a larger population to draw conclusions about that population. In health system management, sampling is a crucial tool used for research, policy evaluation, quality control, and decision-making. It enables efficient data collection, reduces costs, and allows for timely analysis.

### Definition of Sampling
Sampling refers to the procedure of selecting a representative group from the total population under study. The goal is to ensure that the selected sample accurately reflects the characteristics of the larger population. The sample size and method directly influence the reliability and validity of the findings.

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### Types of Sampling Methods
Sampling methods can broadly be classified into probability sampling and non-probability sampling:

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#### 1. Probability Sampling
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