Sampling Methods and Their Characteristics

The video tutorial covers six types of sampling methods essential for psychology students. It begins with random sampling, where each individual has an equal chance of selection. Stratified random sampling involves dividing the population into subgroups and selecting randomly from each. Systematic sampling selects every nth individual from a list, while cluster sampling involves studying entire clusters like neighborhoods. Convenience sampling selects individuals who are readily available, and nonprobability sampling involves selecting based on convenience or judgment, which may lead to bias.

What is a key advantage of random sampling?

• It is cost-effective.

• It is easy to implement with large populations.

• Every member has an equal chance of being selected.

• It requires detailed knowledge of the population.

Why might random sampling be difficult to implement with large populations?

• It requires a lot of time.

• It introduces bias.

• It is too expensive.

• It can be logistically challenging.

In stratified random sampling, how is the population divided?

• Into clusters based on location.

• Into strata based on specific characteristics.

• Into equal parts.

• Into random groups.

What is required for stratified random sampling to be effective?

• A large sample size.

• Detailed knowledge of the population structure.

• A random selection process.

• A cost-effective approach.

What is a potential drawback of systematic sampling?

• It is not cost-effective.

• It requires a large sample size.

• It can introduce bias if there is a pattern in the list.

• It is too complex to implement.

How does systematic sampling select participants?

• Randomly from a hat.

• Based on convenience.

• By choosing every nth person from a list.

• By dividing into clusters.

What is an advantage of cluster sampling?

• It eliminates all forms of bias.

• It is cost-effective.

• It requires no prior knowledge of the population.

• It provides a detailed representation of the population.

Which sampling method involves selecting participants based on their availability?

• Random sampling

• Systematic sampling

• Convenience sampling

• Stratified random sampling

What is a common issue with nonprobability sampling?

• It is too expensive to conduct.

• It does not represent the broader population.

• It requires a large sample size.

• It is too time-consuming.

What is a characteristic of convenience sampling?

• It requires detailed population knowledge.

• It eliminates all forms of bias.

• It is quick and easy to conduct.

• It ensures a balanced representation of all subgroups.