Results 1 to 10 of about 1,662,855 (280)
Does Systematic Sampling Preserve Granger Causality with an Application to High Frequency Financial Data? [PDF]
Econometrics, 2018 In applied econometric literature, the causal inferences are often made based on temporally aggregated or systematically sampled data. A number of studies document that temporal aggregation has distorting effects on causal inference and systematic ...
Gulasekaran Rajaguru +2 more
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A modified version of diagonal systematic sampling in the presence of linear trend. [PDF]
PLoS ONE, 2022 Systematic sampling is one of the simplest and popular methods for selecting a random sample from a finite population. The diagonal systematic sampling scheme is a type of systematic sampling design which has gained the attention of researchers during ...
Muhammad Azeem
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An improved version of systematic sampling design for use with linear trend data [PDF]
Heliyon, 2023 In survey sampling, systematic sampling design has attracted survey researchers in recent years due to its simplicity of use. We introduce a modified variant of systematic sampling scheme which improves the efficiency of a recently developed diagonal ...
Muhammad Azeem +4 more
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An efficient modification to diagonal systematic sampling for finite populations
AIMS Mathematics, 2021 This paper presents a new modified diagonal systematic sampling method for the linear trend situation. For numerical illustration, data from the literature have been used to compare the proposed method's efficiency with some existing sampling schemes ...
Muhammad Azeem +4 more
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Diversity, 2020 The study of tardigrade diversity in Mexico is at early stage of development, to date, 56 extant species have been reported. To identify the tardigrade fauna associated with mosses in the Iztaccíhuatl volcano, we performed a systematic sampling along an ...
Alba Dueñas-Cedillo +4 more
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AIMS Mathematics, 2022 Estimators for the finite population mean of the research variable are proposed in this article, employing ratio, product, and regression type estimators, all of which need just one auxiliary variable.
Anum Iftikhar +5 more
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Journal of Water and Climate Change, 2023 The Wei River Basin has suffered from severe droughts. It is essential to build drought relief projects to cope with drought disasters. Traditionally, design quantiles have been estimated using univariate analysis, in which multiple characteristics of ...
Jie Yang, Jun Yao
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Modified Systematic Sampling with Multiple Random Starts
Revstat Statistical Journal, 2018 Systematic sampling has been facing two problems since its beginning; situational complications, e.g., population size N not being a multiple of the sample size n, and unavailability of unbiased estimators of population variance for all possible ...
Sat Gupta , Zaheen Khan , Javid Shabbir
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