Zobrazeno 1 - 10
of 25
pro vyhledávání: '"M. J. Ahsan"'
Publikováno v:
Engineering, Technology & Applied Science Research, Vol 10, Iss 2 (2020)
Biodiesel is a significantrenewable, safe, and environmentally friendly source of energy that produces a lesser amount of greenhouse effect gasses. The studied biodiesel source is local chicken frying oil, synthesized by the trans-esterification proc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c9b5c5802f33d034c63e4a07532b6fc
Publikováno v:
Journal of Advanced Statistics. 3
Publikováno v:
Journal of Applied Statistics. 42:1032-1042
In stratified sampling when strata weights are unknown a double sampling technique may be used to estimate them. A large simple random sample from the unstratified population is drawn and units falling in each stratum are recorded. A stratified rando
Publikováno v:
Communications in Statistics - Simulation and Computation. 44:1364-1387
The method of choosing the best boundaries that make strata internally homogenous as far as possible is known as optimum stratification. To achieve this, the strata should be constructed in such a way that the strata variances for the characteristic
Publikováno v:
Annals of Operations Research. 226:659-668
In multivariate stratified sampling more than one characteristic are defined on every unit of the population. An optimum allocation which is optimum for one characteristic will generally be far from optimum for others. To resolve this problem, a comp
Publikováno v:
IOSR Journal of Mathematics. 10:38-49
In sample surveys, stratified sampling is useful if the strata weights are known for each stratum. If they are not known double sampling may be used by selecting a large preliminary sample to estimate the strata weights. Then a stratified sample may
Publikováno v:
Open Journal of Optimization. :68-78
This paper is an attempt to work out a compromise allocation to construct combined ratio estimates under multivariate double sampling design in presence of non-response when the population mean of the auxiliary variable is unknown. The problem has be
Publikováno v:
Journal of Mathematical Modelling and Algorithms in Operations Research. 13:523-536
For estimating the population mean Clark and Steel (Stat. 49, 1970–207 2000) worked out the optimum allocation of sample sizes to strata and stages with simple additional constraints to use different type of allocations in different strata. Ahsan e
Publikováno v:
Communications in Statistics - Simulation and Computation. 42:790-799
In stratified sample surveys, the problem of determining the optimum allocation is well known due to articles published in 1923 by Tschuprow and in 1934 by Neyman. The articles suggest the optimum sample sizes to be selected from each stratum for whi
Publikováno v:
Journal of Mathematical Modelling and Algorithms in Operations Research. 12:383-392
In the present paper a two-stage stratified Warner’s randomized response model is used to determine the optimum allocation in the presence of non-response. The problem is formulated as a Nonlinear Programming Problem. A complete method of solution