Exact bootstrap confidence intervals for regression coefficients in small samples

Samart, Klairung; Jansakul, Naratip; Chongcheawchamnan, M.

doi:10.1080/03610918.2017.1364386

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…The Bootstrap simulation was applied for the validation of the above model, where 500 ran- dom samples were created by sampling with replacement from the original data. This means that the correlation coeffi cient of both the internal and the external model was estimated in all 500 samples, and the average and standard error was calculated (Chin, 1998;Samart, Jansakul & Chongcheawchamnan, 2018). Model parameters where the average is more than double the standard error (SE) are considered statistically signifi cant.…”

Section: Resultsmentioning

confidence: 99%

PLS Modelling of Factors Aff ecting the Cooperation Between Sales and Marketing in Pharmaceutical and Non-Pharmaceutical Manufacturing Firms

Hetényi

Szilasi

Lengyel

2019

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Purpose-This paper aims to explore the manner in which cooperation between sales and marketing in pharmaceutical manufacturing companies (PMC) (n=16) and non-pharmaceutical manufacturing companies (NPMC) (n=31) is aff ected by selected indicators. It also attempts to demonstrate how the Partial Least Square (PLS) path modelling technique can reveal latent mechanisms in the interplay of the examined factors aff ecting SM cooperation. Design/methodology/approach-Data collection was carried out in the form of an online questionnaire. The rating scale data gathered was analyzed using PLS path modelling. Sažetak Svrha-Cilj je rada istražiti kako odabrani indikatori utječu na suradnju između prodaje i marketinga u farmaceutskim (n=16) i nefarmaceutskim proizvodnim poduzećima (n=31). Isto tako, rad pokušava pokazati kako PLS metoda parcijalnih najmanjih kvadrata, kao tehnika modeliranja staza, može otkriti latentne mehanizme u međusobnom djelovanju istraživanih faktora koji utječu na suradnju između prodaje i marketinga. Metodološki pristup-Podaci su prikupljeni korištenjem online anketnog upitnika s mjernim ljestvicama. Analizirani su primjenom PLS metode parcijalnih najmanjih kvadrata.

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Section: Resultsmentioning

confidence: 99%

PLS Modelling of Factors Aff ecting the Cooperation Between Sales and Marketing in Pharmaceutical and Non-Pharmaceutical Manufacturing Firms

Hetényi

Szilasi

Lengyel

2019

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“…Bootstrapping is an econometric tool that is frequently used, in particular, to avoid the violation of assumptions of a regression analysis when the sample size is small. For instance, Samart et al (2017) explain how the exact bootstrap confidence interval, for regressions parameters, is effective when the sample size is very small and under Laplace distribution.…”

Section: Methodology and Datamentioning

confidence: 99%

An econometric understanding of Fintech and operating performance

Bouheni

Tewari

Sidaoui

et al. 2023

RAF

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Purpose This study aims to develop a unique methodology to construct a bank’s financial technology (Fintech) score, which captures the degree of digitalization of a bank’s operations. Using the Fintech score as the proxy, this study investigates the effect of Fintech on the operating performance of the top largest Islamic bank. Design/methodology/approach The methodology used measures the link between the degree of digitization of a bank and its operational performance. This study applies the three-degree polynomial of regression to the largest Islamic bank in which the explanatory variable is the natural logarithm of Fintech score, and the response variable is common operating performance measure. To check the sensitivity of the estimates to the sample size and assumptions’ violation, this study has applied Bootstrapping and Bayesian processes to the three-degree polynomial regressions. Findings The study estimates from 2007 to 2021 show that the relationship between the operating performance of the Islamic banks and the Fintech is nonlinear and strongly significant: operating returns increase with the increasing level of Fintech, whereas the operating returns decrease with the increasing Fintech variance. At an aggregate level, this study attributes a significant rise in internet coverage to the emergence of Fintech in the Middle East region. Originality/value This study constructs an implicit measure of Fintech that measures the adoption of Fintech by the bank and, consequently, offers the technology to their customers for higher use satisfaction. This study finds that Fintech is linked to the operating performance in a nonlinear fashion, in which Fintech and Fintech variance have the opposite effect on operating performance: Fintech increases the operating profitability, whereas Fintech variance decreases the operating profitability of a bank.

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“…However, the subjective selection of the prior distribution limits its application [27]. The Bootstrap method assumes that the empirical distribution fits the sample distributions well and extends the sample by resampling [28,29]. This method is intuitive and convenient, but the estimates are usually approximate.…”

Section: Introductionmentioning

confidence: 99%

Reliability Assessment for a Spacecraft Landing Buffer Mechanism Based on Small Sample Data

Li,

Fu,

2023

Machines

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The landing buffer mechanism (LBM) is a crucial component of aerospace landing explorations, determining the success of the entire mission. Reliability demonstration tests (RDTs) are required to ensure the LBM’s performance meets the design index. However, the RDTs of the LBM often encounter limited samples and zero-failure data, making traditional binominal test programs and reliability assessment methods based on the maximum likelihood theory unsuitable. This paper introduces a novel small-sample test verification method for the LBM, which transforms traditional binominal tests into more informative metrological tests by measuring the buffer strokes of the LBM’s subsystems. Furthermore, a confidence limit theory for the product of subsystem reliability is developed in conjunction with the reliability series model of the LBM. This theory can use the measurement data of subsystems to assess the confidence limit of the LBM’s reliability. An actual engineering application demonstrates that the proposed method can effectively handle zero-failure data and verifies that the LBM’s reliability exceeds 0.9999 with a confidence of 0.9.

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Exact bootstrap confidence intervals for regression coefficients in small samples

Cited by 7 publications

References 8 publications

PLS Modelling of Factors Aff ecting the Cooperation Between Sales and Marketing in Pharmaceutical and Non-Pharmaceutical Manufacturing Firms

PLS Modelling of Factors Aff ecting the Cooperation Between Sales and Marketing in Pharmaceutical and Non-Pharmaceutical Manufacturing Firms

An econometric understanding of Fintech and operating performance

Reliability Assessment for a Spacecraft Landing Buffer Mechanism Based on Small Sample Data

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