Practise the method.
Example 1
The target is the whole school. Every student is on a current list, and the budget allows only a small survey. Which selection method gives each student the same chance?
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Answer: Use a random draw from the complete student list
- Drawing randomly from a complete list gives every listed student an equal chance.
- Friendship and leadership groups restrict access.
Example 2
A random library survey uses a complete membership list, and every selected member answers. Which assessment best matches the information given?
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Answer: There is no obvious selection or non-response problem in the stated plan
- The complete list and random selection address coverage and selection, while full response avoids non-response here.
- Sampling variation still remains.
Example 3
Classify this survey question: “How many times did you use the library in the past seven days?”
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Answer: Neutral
- A specific time period and a single count give a clear, non-leading question.