השוואת שיטות

	דגימה הפוכה	דגימה כפולה
תחום	דגימה	דגימה
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1945	1938
הוגה השיטה	John Burdon Sanderson Haldane	Jerzy Neyman
סוג	Sequential sampling method	Multi-phase sampling design
מקור מכונן	Haldane, J. B. S. (1945). On a method of estimating frequencies. Biometrika, 33(3), 222–224.	Neyman, J. (1938). Contribution to the theory of sampling human populations. Journal of the American Statistical Association, 33(201), 101–116.
כינויים	Sequential Sampling	Two-Phase Sampling
קשורות	3	4
תקציר	Inverse Sampling is a sequential sampling strategy where sampling continues until a fixed number of occurrences of a rare event or item of interest is observed. Introduced by J. B. S. Haldane in 1945, it is particularly efficient for estimating rare event probabilities or proportions when the target is sparse and costly to detect.	Double Sampling (also called two-phase or multistage sampling) is a survey design in which a large preliminary sample is collected using inexpensive methods or partial information, then a smaller subsample is drawn from it and measured in detail. Pioneered by Jerzy Neyman in 1938, it is particularly useful when a cheap surrogate measurement is available but true measurement is expensive.