Provider: Ingenta Connect
Database: Ingenta Connect
Content: application/x-research-info-systems
TY - ABST
AU - Schreuder, H. T.
TI - Notes: The Gain in Efficiency in ps Sampling over Poisson Sampling
JO - Forest Science
PY - 1990-12-01T00:00:00///
VL - 36
IS - 4
SP - 1146
EP - 1152
KW - optimum linear model
KW - Fixed sample
KW - Hotvitz-Thompson
N2 - A ratio is derived for the relative efficiency of mean-of-ratio estimation for ps sampling without replacement relative to Poisson sampling, assuming the model for which ps sampling with this estimator is optimum. This efficiency ratio is R = 1 + 1/n_{e} where n_{e} = the expected sample size in Poisson sampling and the sample size used in pps sampling. ps sampling from the cumulated x-values, a replacement sampling scheme, is compared to Poisson sampling in a simulation study using four sets of three populations, where two populations in each set are realizations of the optimal linear model for ps sampling with the Horvitz-Thompson estimator, and the third is an actual data set. The derived ratio is a good indicator of the gain in efficiency of ps sampling relative to Poission sampling. This is confirmed by simulation results from some populations. For. Sci. 36(4):1146-1152.
UR - http://www.ingentaconnect.com/content/saf/fs/1990/00000036/00000004/art00023
ER -