So sánh phương pháp

	Lấy mẫu hạn ngạch có trọng số	Lấy mẫu có trọng số
Lĩnh vực	Phương pháp luận khảo sát	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline
Năm ra đời	Mid-to-late 20th century	1940s–1952 (formalized in large-scale government survey work and the Horvitz-Thompson estimator)
Người khởi xướng	Derived from quota sampling (mid-20th century market research) combined with survey weighting theory (Kalton, 1983)	Morris H. Hansen, William N. Hurwitz; D. G. Horvitz and D. J. Thompson (theoretical framework)
Loại	Non-probability sampling with post-collection weight adjustment	Probability sampling design
Công trình gốc	Kalton, G. (1983). Introduction to Survey Sampling. Sage Publications. ISBN: 978-0803921290	Cochran, W. G. (1977). Sampling Techniques (3rd ed.). John Wiley & Sons. ISBN: 978-0471162407
Tên gọi khác	quota sampling with weighting, weighted quota survey, post-weighted quota sampling, quota sample weighting	probability proportional to size sampling, PPS sampling, unequal probability sampling, importance sampling
Liên quan	5	6
Tóm tắt	Weighted quota sampling combines quota sampling — recruiting a set number of respondents matching pre-specified demographic cells — with post-collection statistical weighting that adjusts each respondent's contribution to match known population proportions. The result is a non-probability design with a bias-correction mechanism, widely used in market research, political polling, and applied social surveys when probability sampling is impractical but representativeness remains a goal.	Weighted sampling is a probability-based design in which units are selected with unequal probabilities proportional to a known auxiliary measure of size or importance. Sampling weights — the inverse of inclusion probabilities — are applied during analysis so that each sampled unit correctly represents the population units it stands for. The approach underpins large-scale government, health, and social surveys where simple random sampling would be inefficient.