Examlex
The physical state(s) present when a substance is melting is (are) ________.
Stratified Sample
A sampling technique where the population is divided into subgroups (strata) and samples are drawn from each stratum to ensure representation of the whole population.
Primary Research
The process of gathering original data directly from sources through surveys, interviews, or experiments.
Interviews
Structured conversations where one or more persons ask questions to obtain information from another person, often used in the context of job hiring.
Closed Question
A type of question that is designed to receive a specific, limited response, such as 'yes' or 'no,' rather than an open-ended or detailed reply.
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