Examlex
The two general types of earthquake waves are ______________ waves and body waves.
Survey Research
A method of collecting information from a sample of individuals using questionnaires or interviews to study opinions, behaviors, or characteristics.
Self-Report
A method where individuals provide data about themselves, often in questionnaires or surveys, typically used in psychology and social science research.
Primary Research
involves the collection of original data through direct investigation or experiments, rather than analyzing previously published data.
Bonus Product
An additional item given to consumers as an incentive for purchasing a primary product.
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