Sampling Methods Quiz

A researcher selects every 10th student entering a college campus to complete a survey. Which sampling method is being used?

• Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

Answer explanation

The sampling method being used is Systematic Sampling because the researcher selects every 10th student entering the campus, following a systematic pattern.

A market researcher divides the population into different age groups and selects a random sample from each group to understand preferences in music genres. What type of sampling method is this?

• Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

Answer explanation

The correct sampling method is Stratified Sampling because the population is divided into different age groups before selecting random samples from each group.

To study the average income level of households in a city, a statistician randomly selects 50 blocks and surveys all households within the selected blocks. Which sampling method is being used?

• Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

Answer explanation

The sampling method being used is Cluster Sampling, where blocks are randomly selected and all households within those blocks are surveyed.

A student conducting a research on eating habits picks respondents from his circle of friends. This is an example of which type of sampling?

• Random Sampling

• Convenience Sampling

• Systematic Sampling

• Cluster Sampling

Answer explanation

The student's selection of respondents from his circle of friends represents Convenience Sampling, where participants are chosen based on ease of access or availability.

In a study to understand employee satisfaction, every fifth employee from the company roster is selected until the desired sample size is reached. Identify the sampling method used.

• Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

Answer explanation

In systematic sampling, every nth element is selected from a list, making it the method used in this scenario where every fifth employee is chosen from the roster.

A researcher interested in studying voting patterns divides the population into several districts (clusters) and randomly selects entire districts to conduct the study. Which sampling method is this?

• Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

Answer explanation

The sampling method described involves randomly selecting entire districts, making it an example of Cluster Sampling.

When a pollster selects participants for a political survey by using a random number generator to pick phone numbers from a directory, which sampling method is being used?

• Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

Answer explanation

Random Sampling is being used because participants are selected randomly using a random number generator, ensuring each member of the population has an equal chance of being included in the survey.

A health researcher wants to ensure representation from all age groups and genders in a study about fitness habits. She divides the population into groups based on these characteristics and randomly selects participants from each group. What is this an example of?

• Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

Answer explanation

This is an example of Stratified Sampling as the researcher divides the population into groups based on characteristics and randomly selects participants from each group.

A survey on job satisfaction is conducted by selecting participants who are easily accessible, including friends and nearby office workers. This is an example of which sampling method?

• Random Sampling

• Convenience Sampling

• Systematic Sampling

• Cluster Sampling

Answer explanation

Convenience Sampling is the correct choice because it involves selecting easily accessible participants, like friends and nearby office workers, for the survey on job satisfaction.

In a large university, a statistician selects every 20th student from an alphabetically ordered list until 200 students are surveyed. Which sampling method does this describe?

• Random Sampling

• Stratified Sampling

• Systematic Sampling

• Cluster Sampling

Answer explanation

The sampling method described is Systematic Sampling where every 20th student is selected from an ordered list until the desired sample size is reached.