QuestionIdentify the sampling method (simple random sampling, systematic sampling, convenience sampling, cluster sampling, or stratified sampling) in the following study.
Researchers studying the use of antidepressants select 74 participants between the ages of 20 and 29, 74 participants between the ages of 30 and 39 , and 74 participants between the ages of 40 and 49 .
What type of sampling is used?
Convenience sampling
Simple random sampling
Cluster sampling
Stratified sampling
Systematic sampling
Studdy Solution
STEP 1
1. The study involves selecting participants from specific age groups.
2. Each age group is treated as a separate category.
STEP 2
1. Understand the characteristics of each sampling method.
2. Analyze the given study to identify the sampling method used.
STEP 3
Understand the characteristics of each sampling method:
- **Simple Random Sampling**: Every member of the population has an equal chance of being selected.
- **Systematic Sampling**: Members are selected at regular intervals from an ordered list.
- **Convenience Sampling**: Members are selected based on ease of access.
- **Cluster Sampling**: The population is divided into clusters, and entire clusters are randomly selected.
- **Stratified Sampling**: The population is divided into strata (groups) based on a characteristic, and members are randomly selected from each stratum.
STEP 4
Analyze the study:
- Participants are divided into age groups: 20-29, 30-39, 40-49.
- An equal number of participants (74) is selected from each age group.
STEP 5
Identify the sampling method:
- The study divides the population into strata based on age.
- Participants are selected from each age group (stratum).
This matches the definition of **Stratified Sampling**.
The sampling method used is:
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