Results 21 to 30 of about 304,459 (351)

Efficient class of ratio cum median estimators for estimating the population median.

open access: yesPLoS ONE, 2023
In estimation theory, the use of auxiliary information significantly improves precision while estimating population parameters. In this paper, an efficient class of ratio cum median estimators of the population median is suggested using simple random ...
Mir Subzar   +6 more
doaj   +2 more sources

Optimum estimator in simple random sampling using two auxiliary attributes with application in agriculture, fisheries and education sectors

open access: yesMethodsX, 2022
In modern age of information technology, data is available everywhere in huge amount. Every sector generates lot of data every day. The investigation of each unit of data is not feasible due to limited resources like time, labor, and cost.
Monika Saini   +2 more
doaj   +1 more source

Double Kernel Method Using Line Transect Sampling

open access: yesAustrian Journal of Statistics, 2016
A double kernel method as an alternative to the classical kernel method is proposed to estimate the population abundance by using line transect sampling.
Omar Eidous, M.K. Shakhatreh
doaj   +1 more source

Bias of area counted from sub-pixel map: Origin and correction

open access: yesScience of Remote Sensing, 2022
With the increasingly widespread use of sub-pixel mapping techniques in land cover/use mapping, more accurate area information is often required for a specific land cover type in a particular study region. However, the bias of area counted from sub-pixel
Qi Dong   +9 more
doaj   +1 more source

A Novel Sub-Type Mean Estimator for Ranked Set Sampling with Dual Auxiliary Variables

open access: yesJournal of New Theory, 2023
This research introduces a novel sub-estimator designed to estimate the population mean under ranked set sampling, motivated by the new concept of a recently introduced sub-ratio estimator.
Eda Gizem Koçyiğit
doaj   +1 more source

Dynamic Capital Structure Adjustment: Which estimator yields consistent and efficient estimates?

open access: yesJournal of Economic and Financial Sciences, 2016
The partial adjustment model is key to a number of corporate finance research areas. The model is by its nature an autoregressive-distributed lag model that is characterised by heterogeneity among individuals and autocorrelation due to the presence of ...
Vusani Moyo
doaj   +1 more source

A fixed count sampling estimator of stem density based on a survival function

open access: yesJournal of Forest Science, 2015
In fixed count sampling (FCS) a fixed number (k) of observations is made at n randomly selected sample locations. For estimation of stem density, the distance from a random sample location to the k nearest trees was measured.
S. Magnussen
doaj   +1 more source

Modified estimator of the contribution rates of population eigenvalues [PDF]

open access: yes, 2012
Modified estimators for the contribution rates of population eigenvalues are given under an elliptically contoured distribution. These estimators decrease the bias of the classical estimator, i.e. the sample contribution rates.
Sheena, Yo
core   +3 more sources

A Modified Ratio-Cum-Product Estimator of Finite Population Mean in Stratified Random Sampling Rajesh Tailor1)

open access: yesData Science Journal, 2009
This paper suggests a ratio-cum-product estimator of finite population mean using a correlation coefficient between study variate and auxiliary variate in stratified random sampling.
Rajesh Tailor
doaj   +1 more source

A subsampling method for the computation of multivariate estimators with high breakdown point [PDF]

open access: yes, 1994
All known robust location and scale estimators with high breakdown point for multivariate sample's are very expensive to compute. In practice, this computation has to be carried out using an approximate subsampling procedure.
Juan, Jesús, Prieto, Francisco J.
core   +5 more sources

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