Question

fill in the blank with an appropriate word or phrase.

a sample that consists of a random selection of groups or units is called a ______ sample.

a sample that consists of a random selection of groups or units is called a dropdown sample.
options:
stratified
random
cluster
systematic
convenience

Explanation:

Analyze the definition of sampling methods

A sampling method where the population is divided into naturally occurring groups (clusters) and a random selection of these entire groups or units is chosen is called cluster sampling.

Compare with other options

• Stratified: Randomly selecting individuals from every group.
• Systematic: Selecting every \(k\)-th individual.
• Convenience: Selecting easily accessible individuals.
• Cluster: Selecting entire groups or units randomly.

Thus, "cluster" is the correct term.

Answer:

Fill in the blank with an appropriate word or phrase.

A sample that consists of a random selection of groups or units is called a <blank>cluster</blank> sample.