So sánh phương pháp

	Lấy mẫu Hệ thống Trực tuyến	Lấy mẫu ngẫu nhiên đơn trực tuyến
Lĩnh vực	Phương pháp luận khảo sát	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline
Năm ra đời	Late 1990s–2000s (web survey era)	Late 1990s–2000s (digital adaptation)
Người khởi xướng	Adapted from classical systematic sampling (Madow & Madow, 1944) for web survey contexts	Adapted from classical simple random sampling (Neyman, 1934) for web/digital survey contexts; operationalised by survey methodology researchers from the late 1990s onward
Loại	Probability sampling design	Probability sampling design
Công trình gốc	Couper, M. P. (2008). Designing Effective Web Surveys. Cambridge University Press. ISBN: 978-0521713528	Couper, M. P. (2008). Designing Effective Web Surveys. Cambridge University Press. ISBN: 978-0521700535
Tên gọi khác	web systematic sampling, digital systematic sampling, interval sampling online, e-survey systematic sampling	web simple random sampling, internet SRS, digital random sampling, online SRS
Liên quan	4	5
Tóm tắt	Online systematic sampling applies the classical every-k-th-element rule to digital survey contexts — selecting respondents from a web panel, membership database, or visitor stream at a fixed interval. It combines the operational simplicity of systematic sampling with the reach and speed of online data collection, producing a roughly representative sample without requiring complex randomisation infrastructure.	Online simple random sampling applies the logic of classical simple random sampling (SRS) to digital data collection: every member of a defined online population has an equal and independent probability of being selected, and the survey is administered via web platform, email link, or online panel. The approach combines the statistical rigour of probability sampling with the speed and cost advantages of internet-based survey delivery.