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Systematic sampling is easy, efficient, and widely used, though it is not generally recognized that a systematic sample … of them determine which estimators are unbiased, when using the sampling design as the basis for inference. We describe … selection. When the population size is known at the outset, systematic sampling with unrestricted selection is most likely the …
Persistent link: https://www.econbiz.de/10009429445
inventory of fine woody debris (FWD); however, the sampling protocols involve tallying only the number of FWD pieces by size … class that intersect a sampling transect with no measure of actual size. The line intersect estimator used with those … samples requires a measurement of the quadratic mean diameter (QMD). Published information regarding appropriate QMDs by FWD …
Persistent link: https://www.econbiz.de/10009429473
Binomial sampling based on the proportion of samples infested was investigated for estimating mean densities of citrus … parameters adequately described a validation data set from a sampling plan consisting of 192 samples. Projections indicated the … fitted parameters would apply to sampling plans with as few as 48 samples, but reducing sample size resulted in an increase …
Persistent link: https://www.econbiz.de/10009429479
presence-absence sampling plan with a fixed precision level was developed and can be used to provide a quick estimation of D …. Projections indicated that a sampling plan consisting of 10 trees and eight flush shoots per tree would provide density estimates …
Persistent link: https://www.econbiz.de/10009429531
totals. Their efficiency in small-area estimation problems can be poor. In this study, we propose a modified balanced … repeated replication estimator of variance (BRR) of a kNN total that performs well in small-area estimation problems and under … both simple random and cluster sampling. The BRR estimate of variance is the sum of variances and covariances of unit …
Persistent link: https://www.econbiz.de/10009429532
In many applications of line intersect sampling, transects consist of multiple, connected segments in a prescribed … illustrated and a consistent sampling protocol, applicable to populations composed of arbitrarily shaped elements, is proposed. It …
Persistent link: https://www.econbiz.de/10009429541
relation between the job–finding rate and the vacancy–unemployment ratio, provided that search costs are small and that search …
Persistent link: https://www.econbiz.de/10009471656
The accurate fitting of a circle to noisy measurements of points on its circumference is an important and much-studied problem in statistics. Atherton & Kerbyson (Image and Vision Computing 17, 1999, 795-803) have proposed a complex convolutional circle parameter estimator. One of the estimators...
Persistent link: https://www.econbiz.de/10009448050
phenomenon’s inherent heterogeneity in research design, sampling, operationalization and analysis; i.e., strategies that may help …
Persistent link: https://www.econbiz.de/10009437544
Carlo, Latin hypercube sampling with constrained Monte Carlo, and generalized likelihood uncertainty estimation), and …
Persistent link: https://www.econbiz.de/10009429563