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| 현장 기반 편의 표본 추출× | 할당 표본 추출× | |
|---|---|---|
| 분야 | 조사방법론 | 조사방법론 |
| 계열 | Process / pipeline | Process / pipeline |
| 기원 연도≠ | Mid-20th century onward | 1930s |
| 창시자≠ | Conventional practice in social and epidemiological field research | Developed in market research and opinion polling, notably applied by George Gallup in the 1930s |
| 유형≠ | Non-probability sampling | Non-probability sampling design |
| 원전≠ | Babbie, E. (2010). The Practice of Social Research (12th ed.). Wadsworth Cengage Learning. ISBN: 978-0495598428 | Moser, C. A., & Kalton, G. (1972). Survey Methods in Social Investigation (2nd ed.). Heinemann. ISBN: 978-0435827496 |
| 별칭≠ | intercept sampling, on-site convenience sampling, street intercept sampling, field intercept survey | quota-controlled sampling, quota selection, non-probability quota sampling |
| 관련≠ | 4 | 5 |
| 요약≠ | Field-based convenience sampling is a non-probability technique in which researchers recruit participants by approaching whoever is physically present and accessible at a chosen real-world location — a market, hospital waiting room, park, or transit hub. It is widely used in public health surveillance, marketing research, and exploratory social surveys when rapid, low-cost data collection is needed and probability sampling is not feasible. | Quota sampling is a non-probability technique in which the researcher pre-specifies how many units to recruit from each subgroup (quota cell) defined by one or more control variables such as age, gender, or occupation. Interviewers or data collectors then use their own judgment to find and enroll participants until each cell is filled. The method guarantees the sample mirrors the population on the control variables but does not provide the randomness needed for classical statistical inference. |
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