Сравнение на методи

	Претеглено подбиране на типични случаи	Целенасочено подбиране
Област	Методология на проучванията	Методология на проучванията
Семейство	Process / pipeline	Process / pipeline
Година на възникване	1990s–2000s (as a mixed-methods extension)	Formalized ~1980–1990
Създател	Derived from Patton's typical case sampling (1990) combined with classical survey weighting principles	Michael Quinn Patton (systematic articulation); roots in early qualitative inquiry
Тип	Purposive sampling with probability weighting	Non-probability sampling strategy
Основополагащ източник	Patton, M. Q. (2002). Qualitative Research and Evaluation Methods (3rd ed.). Sage. pp. 236–238 (typical case sampling). ISBN: 978-0761919711	Patton, M. Q. (1990). Qualitative Evaluation and Research Methods (2nd ed.). Sage. ISBN: 978-0803937796
Други названия	weighted purposive typical sampling, probability-weighted typical case selection, typical case sampling with weighting, weighted representative case sampling	judgmental sampling, selective sampling, criterion-based sampling, purposeful sampling
Свързани	6	4
Резюме	Weighted typical case sampling combines the purposive logic of typical case selection — choosing cases that represent the modal, average, or most common profile of a population — with post-selection probability weighting. The result is a sample that is both substantively representative (cases reflect the norm) and statistically corrected for differential selection probabilities or population structure. It is used in mixed-methods and survey research where depth of typical examples matters alongside inferential accuracy.	Purposive sampling is a non-probability strategy in which the researcher deliberately selects participants, documents, or cases that are information-rich with respect to the research question. Rather than drawing units at random, the researcher applies explicit criteria aligned with the study's purpose, maximising the depth and relevance of the data collected. It is the default sampling logic in most qualitative research designs and is also used in mixed-methods and applied evaluative work.