[Answer] Which study?Observes data that already exist.

Answer: Observational Study

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Which study?Observes data that already exist. Inferential Statistics . uses random samples drawn from each strata or subgroup . This technique requires a prescribed proportion of members to be interviewed from each subgroup and is often used to ensure that a sample is representative of the population. An observational study observes data that already exist . An experiment generates data to help identify cause-and-effect relationships. A representative sample has the same relevant characteristics as the population and does not favor one group from the population over another. In a cross-sectional study data are collected at a single point in time. A technique in which case study observations are used to discover flaws in and to improve existing social theories . extended case method - A research technique in which the personal experiences of individuals are used to reveal power relationships and other characteristics of the institution within which they operate. Gathering Data • Observational Study : observes individuals and measures variables of interest but does not attempt to influence the responses. • Experiment : Deliberately imposes some treatment on individuals in order to observe their responses. • Population: the entire group of individuals that we want information about Secondary data ana...

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