A probability selection method ensures that every member of the population has a known and non-zero chance of being selected, which allows for unbiased and statistically valid results. Simple random sampling is a common example of this method.
When each member of a population has an equally/likely chance of being selected, it is?
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Question context
This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.