Below are several plans to choose from to sample the parents. Match the sampling strategy in each plan. $$ \square $$ Ask the parents that are hanging out in the playground with the kids before the bell rings. $$ \square $$ Randomly select a grade level and ask all the parents with kids in that grade level. Randomly select two classes from each grade level. Send a survey home with each students and request they be turned back in the next day. Using the class roster, select every fifth student from the list. 1. Stratified sampling. 2. Cluster sampling. 3. Simple Random sampling 4. Systematic sampling 5. Convenience sampling. 6. Voluntary response sampling.

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Let's match each sampling strategy in the plans provided:

1. **Ask the parents that are hanging out in the playground with the kids before the bell rings.**
   - This is an example of **Convenience sampling** (5) because it involves selecting individuals who are easily accessible.

2. **Randomly select a grade level and ask all the parents with kids in that grade level.**
   - This is an example of **Stratified sampling** (1) because it involves dividing the population into strata (grade levels) and then sampling all individuals from a selected stratum.

3. **Randomly select two classes from each grade level. Send a survey home with each student and request they be turned back in the next day.**
   - This is an example of **Cluster sampling** (2) because it involves dividing the population into clusters (classes) and then randomly selecting entire clusters to sample.

4. **Using the class roster, select every fifth student from the list.**
   - This is an example of **Systematic sampling** (4) because it involves selecting individuals based on a fixed interval (every fifth student).

5. **Randomly select two classes from each grade level. Send a survey home with each student and request they be turned back in the next day.**
   - This is an example of **Cluster sampling** (2) because it involves dividing the population into clusters (classes) and then randomly selecting entire clusters to sample.

6. **Ask parents to voluntarily respond to a survey if they are interested.**
   - This is an example of **Voluntary response sampling** (6) because it relies on individuals choosing to participate in the survey.

Now, let's summarize the matches:

- **Convenience sampling**: Ask the parents that are hanging out in the playground with the kids before the bell rings.
- **Stratified sampling**: Randomly select a grade level and ask all the parents with kids in that grade level.
- **Cluster sampling**: Randomly select two classes from each grade level. Send a survey home with each student and request they be turned back in the next day.
- **Systematic sampling**: Using the class roster, select every fifth student from the list.
- **Voluntary response sampling**: Ask parents to voluntarily respond to a survey if they are interested.

Note: The last point about voluntary response sampling was not explicitly listed in your plans, but it is included for completeness.
- **Convenience sampling**: Ask parents in the playground. - **Stratified sampling**: Randomly select a grade level and ask all parents. - **Cluster sampling**: Randomly select two classes and send surveys. - **Systematic sampling**: Select every fifth student from the roster. - **Voluntary response sampling**: Ask parents to respond if they want to.

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