Compară metode

	Eșantionare inversă	Eșantionare dublă
Domeniu	Eșantionare	Eșantionare
Familie	Process / pipeline	Process / pipeline
Anul apariției	1945	1938
Autorul original	John Burdon Sanderson Haldane	Jerzy Neyman
Tip	Sequential sampling method	Multi-phase sampling design
Sursa seminală	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.
Denumiri alternative	Sequential Sampling	Two-Phase Sampling
Înrudite	3	4
Rezumat	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.