Convenience sampling is a non-probability sampling method where participants are selected based on their accessibility or convenience, rather than their representativeness of the population.

In stratified sampling, the population is divided into strata based on one or more characteristics, such as age, gender, income, or any other relevant variable.

Cluster sampling is often used when it is difficult or expensive to obtain a list of all members of the population. By selecting a few clusters and then surveying all members of those clusters, researchers can obtain a sample that is representative of the population at a lower cost.

Systematic sampling is often used when the population is large and widely dispersed. By selecting every nth member of the population, researchers can obtain a sample that is representative of the population.

Quota sampling is a non-probability sampling method where researchers select participants based on their predetermined quotas for different subgroups of the population. This method can lead to increased bias, as researchers may be tempted to select participants who are more likely to provide the desired results.

Systematic sampling is a probability sampling method where every nth member of the population is selected. This method ensures that every member of the population has an equal chance of being selected.

A pilot study is a small-scale study conducted before a larger research project to test the feasibility of the research project, identify potential problems, and refine the research methods.

A survey is a type of observational research where researchers collect data from a sample of the population through questionnaires or interviews.

A census is a complete enumeration of a population, while a sample survey is a study of a portion of the population that is used to make inferences about the entire population.

Convenience sampling is a non-probability sampling method where participants are selected based on their accessibility or convenience, rather than their representativeness of the population.

In stratified sampling, the population is divided into strata based on one or more characteristics, such as age, gender, income, or any other relevant variable.

Cluster sampling is often used when it is difficult or expensive to obtain a list of all members of the population. By selecting a few clusters and then surveying all members of those clusters, researchers can obtain a sample that is representative of the population at a lower cost.

Systematic sampling is often used when the population is large and widely dispersed. By selecting every nth member of the population, researchers can obtain a sample that is representative of the population.

Quota sampling is a non-probability sampling method where researchers select participants based on their predetermined quotas for different subgroups of the population. This method can lead to increased bias, as researchers may be tempted to select participants who are more likely to provide the desired results.

Systematic sampling is a probability sampling method where every nth member of the population is selected. This method ensures that every member of the population has an equal chance of being selected.