Simple random sample (SRS)
Definition
A simple random sample (SRS) is a subset of individuals selected from a larger population in such a way that every individual has an equal chance of being chosen and all possible samples have the same probability of being selected.
Analogy
Imagine you have a jar filled with different colored marbles. If you close your eyes, shake the jar well, and then randomly pick out a handful of marbles without looking, you are essentially creating a simple random sample. Each marble has an equal chance of being chosen.
Related terms
Sampling frame: A sampling frame refers to the list or set of individuals from which a sample will be drawn. It serves as the basis for selecting participants for research or surveys.
Convenience sampling: Convenience sampling involves selecting individuals who are readily available or easily accessible for inclusion in a study or survey. While it may be convenient, this method may introduce bias into the results.
Margin of error: The margin of error represents the amount by which survey results might differ from the true population value due to random variation. It provides an estimate of how reliable and accurate the findings are likely to be.
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