เปรียบเทียบวิธี

	การสุ่มตัวอย่างแบบกลุ่มโดยอิงภาคสนาม	การสุ่มตัวอย่างแบบง่าย (Simple Random Sampling
สาขาวิชา	ระเบียบวิธีสำรวจ	ระเบียบวิธีสำรวจ
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1950s (theory); 1970s–1980s (field survey practice)	Early 20th century; systematized by Cochran 1953/1977
ผู้ริเริ่ม	William G. Cochran (theoretical foundations); WHO EPI programme (field application)	William Gosset, Jerzy Neyman, and formalized by William Cochran
ประเภท	Probability sampling design	Probability sampling design
แหล่งต้นตำรับ	World Health Organization. (1991). Training for mid-level managers: The EPI coverage survey. WHO/EPI/MLM/91.10. World Health Organization.	Cochran, W. G. (1977). Sampling Techniques (3rd ed.). John Wiley & Sons. ISBN: 978-0471162407
ชื่อเรียกอื่น	field cluster sampling, in-field cluster sampling, area cluster sampling (field), field survey cluster design	SRS, unrestricted random sampling, equal-probability sampling, EPSEM
ที่เกี่ยวข้อง	6	6
สรุป	Field-based cluster sampling is a probability sampling method in which naturally occurring geographic or administrative groups (clusters) are first randomly selected, and then data are collected in person from units within those clusters. It is the standard design for large-scale field surveys in public health, agriculture, education, and humanitarian response, where compiling a full population list is impractical but clusters such as villages, schools, or census tracts can be identified and physically accessed.	Simple random sampling (SRS) is the foundational probability sampling method in which every unit in the population has an equal and independent chance of being selected. Because selection is governed purely by chance, SRS eliminates systematic bias, supports unbiased estimation of population parameters, and provides the statistical baseline against which all more complex probability designs are evaluated.