Random sampling
Clinics vol.70 número10
... The enrolled patients were allocated randomly, using a simple random sampling method, to 2 groups and had their spirometry, sputum cell count, NO measurement and medical interview perfor[r] ...
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An Appraisal of the Population Total of Nigeria Using One Unit per Stratum (Based On 2006 Census Result)
... 3,501,901.105 under the collapsing of 12 strata in six into two groups with an estimated population total of 139,295,482 which was very close to the actual population total of Nigeria based on 2006 census result ...
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Estimation of growth parameters for the exploited sea cucumber Holothuria arguinensis from South Portugal
... The data were collected by 2 methods: visual census and random sampling. During the volunteer program linked with the research project “Sea cucumbers: the new re- sources for a hungry fishery” (CUMFISH) ...
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A Generalized Difference-cum-Ratio Type Estimator for the Population Variance in Double Sampling
... Abstract: For estimating the population variance of variable under study, a generalized difference-cum-ratio type estimator has been proposed. Expressions for bias and mean square error have been obtained using ...
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ANALYSE THE PERFORMANCE OF ENSEMBLE CLASSIFIERS USING SAMPLING TECHNIQUES
... model. Sampling is the process of taking the subset of sample from original dataset ...applying sampling technique. Sampling plays the major role for improving the accuracy of ensemble ...Simple ...
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PS_ENPS, PS_EVVN and PS_ENPSEVVN when
... Post-stratification consists in stratifying the sample data set after the sample has been selected using auxiliary information, namely the population post- strata sizes, which can be derived from administrative registers ...
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Tobacco smoking surveillance: is quota sampling an efficient tool for monitoring national trends? A comparison with a random cross-sectional survey.
... two-stage random sampling stratified by size of urban area and geographical area: the first stage of the sampling involved selecting households by using random digit dialling ...
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CLINICAL STUDY OF MECHANICAL OCULAR INJURIES AND THEIR VISUAL OUTCOME
... stratified random sampling study, eighty patients with significant ocular trauma attending the outpatient & inpatient department of the Department of Ophthalmology attached to ...
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ABCB1 variation and treatment response in AIDS patients: initial results of the Henan cohort.
... Random sampling was used to select a total of 298 HIV-infected Chinese patients living in four areas with high prevalence of HIV infection (Shenqiu, Shangcai, Weishi and Queshan counties[r] ...
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The Efficiency Level in the Estimation of the Nigerian Population: A Comparison of One-Stage and Two-Stage Sampling Technique (A Case Study of the 2006 Census of Nigerians)
... Simple random sampling does, however, require a complete list of all population units as each unit needs to have a unique number associated with it to enable random ...This sampling scheme ...
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Sampling Processes and Intensities for the Geostatistical Modeling of an Unevenly Aged Forest
... different sampling processes and intensities in native forest inventories, such as Higuchi (1987) who observed that systematic sampling is more accurate than random sampling in commercial ...
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SAMPLING IN EXTERNAL AUDIT - THE MONETARY UNIT SAMPLING METHOD
... Example: Let's assume that we have a population made of 6 items, of which 2 items need to be selected. The values of the 6 items are 60, 220, 340, 470, 620 and 1030. In the instance random sampling is used ...
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Random forests estocástico
... Uma série de estudos foram realizados anteriormente comparando Bagging e Boosting [22] [19] [24] [11] [28] [17] [16] [18], o que nos auxilia na construção do experimento. Para executar o experimento, foi utilizada a ...
53
Rational Choice with Categories
... a random choice function or a preference relation over choice problems (preferences over ...the random choice setup, if we start with a random choice function that has a random orderings (or ...
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An Evaluation of Plotless Sampling Using Vegetation Simulations and Field Data from a Mangrove Forest.
... Reflection. None of the plotless sampling methods gave good results across all study sites and vegetation patterns. Taking a combination of methods might be an alternative. White et al. [13] found a combined ...
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Braz. J. Phys. vol.38 número1
... In this paper we show how the Wang-Landau sampling method can be used to study discrete spin models in two- dimensional parameter spaces. The first model we consider is an asymmetric Ising model on a triangular ...
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An objective determination of optimal site locations for detecting expected trends in upper-air temperature and total column ozone
... surement uncertainty, sampling frequency, season, and pressure was assessed using NCEP CFSR reanalyses. Our results show that only for individual temperature mea- surement uncertainties greater than 0.2 K, does ...
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Multilevel model analysis using R
... Multilevel models are usually used in statistical analysis of data that have a hierarchical or clustered structure. One can fi nd such data in various fi elds, like in educational research (schools – classes), social ...
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Milza Celi Fedatto Abelha, Erivelto Goulart, Elaine Antoniassi Luiz Kashiwaqui and Marlene Rodrigues da Silva
... Sampling. Fishes were quarterly collected from April 1996 to January 1997 and from April 1998 to January 1999 with gill nets (2.4; to 16.0 cm diagonally stretched) and trammel nets (6.0; 7.0; 8.0 cm stretched ...
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MATERIALS AND METHODS Sampling
... Species of filamentous fungi detected in cherries and green coffee during different phases of processing: fermentation, drying and storage in polystyrene and jute sacks.. Time (days) [r] ...
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