What technique relies on an investigator's personal discretion rather than random selection to form a sample_____________________?
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Answer: B. Non Probability sampling
Explanation
Non probability sampling relies on personal discretion rather than random selection. Researchers use subjective judgment to choose participants based on availability or goals. This approach lacks random mechanisms required for calculating precise sampling error. Sampling methods are broadly categorized into probability and non probability techniques. Non probability designs include convenience quota purposive and snowball sampling methods. These techniques are useful when researchers study hard to reach populations.
Qualitative researchers often use purposive sampling to select knowledgeable informants. Pilot studies frequently employ non probability samples due to limited time and budgets. Scientists must acknowledge methodological limitations when generalizing non probability findings. Probability sampling utilizes random selection giving every population member an equal chance. Stratified sampling involves random selection within defined population subgroups. Cluster sampling randomly selects entire natural groups rather than using researcher discretion.
- Subject
- Physical Education
- Category
- Physical Education
- Topic
- —
- Difficulty
- medium
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