Sampling Techniques

What is probability sampling?

• A method where all members of the population have an equal chance of being selected.

• A method where only selected members of the population can participate.

• A method where selections are made based on the researcher's discretion.

• A method where no specific rules are followed during the selection process.

Which of the following is NOT a type of probability sampling?

• Stratified sampling

• Convenience sampling

• Cluster sampling

• Systematic sampling

In stratified sampling, the population is divided into groups known as:

• Clusters

• Segments

• Strata

• Batches

What is the main advantage of cluster sampling over simple random sampling?

• It is more precise.

• It is more cost-effective when the population is large and spread out.

• It requires less knowledge about the population.

• It provides a higher degree of randomness.

Which sampling technique involves selecting every n-th element from a list after a random start?

• Simple random sampling

• Systematic sampling

• Cluster sampling

• Stratified sampling

Why is it important to use a random mechanism in probability sampling?

• To ensure that the sample is representative of the population.

• To make the sampling process faster.

• To avoid the use of technology in sampling.

• To increase the complexity of the research design.

In which type of probability sampling are all possible samples of a fixed size equally likely to be chosen?

• Stratified sampling

• Cluster sampling

• Simple random sampling

• Systematic sampling

What is a primary benefit of using stratified sampling?

• It increases the randomness of the sample.

• It ensures convenience in sampling.

• It can achieve greater precision with the same sample size.

• It eliminates the need for collecting samples

A research team wants to study the performance of small businesses in a city that has businesses spread across various districts. Each district has a unique economic environment and size. The team wants to ensure that each district is fairly represented in the study to compare how different environments affect business success. Which sampling method should they use?

• Simple random sampling

• Stratified sampling

• Cluster sampling

• Systematic sampling

Suppose a public health official needs to assess the vaccination status among children in a large, diverse metropolitan area. The population is divided into many distinct ethnic and socioeconomic groups, and the official aims to ensure that the sample reflects these subdivisions accurately to understand vaccination trends. What sampling strategy would best meet this need?

• Stratified sampling

• Simple random sampling

• Cluster sampling

• Simple Random