Opportunity sampling
What Opportunity sampling means in Mathematics A-Level, as defined for AQA, Pearson Edexcel, WJEC.
Definitions of Opportunity sampling
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Reference: WJEC
Chooses subjects who are readily available; while swift and inexpensive, it introduces severe selection bias.
Selecting whoever is conveniently available, which is quick but prone to bias.
Selecting whoever is available, which is quick but biased.
Topics that use Opportunity sampling
- K: Statistical sampling (AQA A-Level)
- Statistical sampling (Pearson Edexcel A-Level)
- Statistical Sampling (AS Unit 2: Applied Mathematics A) (WJEC A-Level)
Related terms
- Population
- Sample
- Simple random sampling
- informal inference
- sampling frame
- methodological evaluation
- Parameter
- parameter estimation
Using Opportunity sampling in the exam
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