Cluster Sampling

Units of the population are grouped; one or more groups are selected at random.  All units of that group are included in the sample.

• cluster sample

• simple random

• stratified

• proportional

Identify the sampling design: SCPS wants to survey its employees.  They pick 4 schools from the county and survey every single employee in each of the 4 buildings.

• cluster

• volunteer

• systematic

• simple random

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block.

This is an example of:

• Simple Random Sample

• Stratified Random Sample

• Cluster Random Sample

• Systematic Random Sampling

A teacher wants to know how well her students are doing on a topic. She randomly picks one class to survey.

• Simple Random

• Cluster

• Stratified

• Systematic

____________ selects a sample by randomly choosing clusters and including each member of the selected clusters in the sample.

• Random sampling

• Cluster sampling

• Stratified sampling

• Convenience sampling

What is cluster sampling?

• A sampling technique where the population is divided into clusters or groups, and a random sample of these clusters is selected for analysis.

• A sampling technique where the population is divided into subgroups based on a specific characteristic, and a random sample of these subgroups is selected for analysis.

• A sampling technique where the population is divided into individual units, and a random sample of these units is selected for analysis.

• A sampling technique where the population is divided into overlapping groups, and a random sample of these overlapping groups is selected for analysis.

Which sampling method divides the population into clusters and takes samples from each cluster?

• Stratified sampling

• Systematic sampling

• Cluster sampling

• Random sampling

When a population is divided into convenient clusters, and entire clusters are chosen at random as the sample.

• stratified sampling

• cluster sampling

• systematic sampling

• self-selected sampling

population is divided into clusters and entire clusters are chosen as the sample

• cluster sample

• simple random sample

• systematic sample

• stratified sample

A __________ sample is used when the population falls into naturally occurring subgroups, each having similar characteristics. To select this type of sample, the population is divided into groups called clusters. Then, all the members of one or more (but not all) of the clusters are selected.