## Sampling

### It is a method of getting a representative portion of a population.

Sampling is a statistical method used to select a representative group of individuals or units from a larger population. This is done to gather information about the population as a whole without having to analyze every single member or unit. Sampling is commonly used in social sciences, market research, public opinion polling, and other areas where it is impractical or impossible to survey an entire population.

There are two main types of sampling: random sampling and non-random sampling.

Random sampling involves selecting individuals or units at random from the population. This is done so that every member or unit of the population has an equal chance of being selected. Random sampling can be further categorized into two main methods: simple random sampling and stratified random sampling.

Simple random sampling involves selecting individuals or units at random from the entire population, without any special criteria or considerations. This is the most straightforward type of random sampling.

Stratified random sampling involves dividing the population into subgroups or strata based on relevant characteristics and then selecting a random sample from each subgroup. This method ensures that the final sample is representative of the population as a whole.

Non-random sampling, on the other hand, involves selecting individuals or units from the population based on specific criteria. This can include purposive sampling, snowball sampling, or quota sampling, among others. Non-random sampling may be useful in certain situations where a random sample is not feasible or necessary, but it may also introduce biases into the final results.

Overall, sampling plays an important role in research and data collection, as it allows researchers to gather information about a large population while minimizing time, effort, and resources required. It is important to carefully consider the sampling method used to ensure that the final sample is representative and unbiased.

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