Final answer:
A sample that includes individuals with known qualifications for experience is called a purposive sample. This non-random method is used to select individuals with specific characteristics for the study. It differs from stratified, systematic, cluster, and convenience sampling.
Step-by-step explanation:
A sample that includes individuals with known qualifications for experience is known as a purposive sample. Purposive sampling is a type of non-random sampling where specific individuals are selected because they have particular characteristics that are relevant to the study. Other types of sampling methods include simple random, stratified, systematic, cluster, and convenience sampling. For example, when a soccer coach selects players based on age groups to form a team, this is an example of stratified sampling. If a pollster interviews all human resources personnel in selected companies, this is known as cluster sampling. When a researcher selects an equal number of male and female teachers for interviews, they are using stratified sampling. In cases where every tenth customer is asked to complete a survey, this is called systematic sampling. Finally, when a sample is drawn from students across all math classes randomly, it is also an example of stratified sampling.