Original title: On the Effect of Human Resources on Tourist Infrastructure: New Ideas on Heteroscedastic Modeling Using Regression Quantiles
Authors: Kalina, Jan ; Janáček, Patrik
Document type: Papers
Conference/Event: RELIK 2020: The International Conference /13./, Prague (CZ), 20201105
Year: 2020
Language: eng
Abstract: Tourism represents an important sector of the economy in many countries around the world. In this work, we are interested in the effect of the Human Resources and Labor Market pillar of the Travel and Tourism Competitiveness Index on tourist service infrastructure across 141 countries of the world. A regression analysis requires to handle heteroscedasticity in these data, which is not an uncommon situation in various available human capital studies. Our first task is focused on testing significance of individual variables in the model. It is illustrated here that significance tests are influenced by heteroscedasticity, which remains true also for tests for regression quantiles or robust regression estimators, resistant to a possible contamination of data by outliers. Only if a suitable model is considered, which takes heteroscedasticity into account, the effect of the Human Resources and Labor Market pillar turns out to be significant. Further, we propose and present a new diagnostic tool denoted as aquintile plot, allowing to interpret immediately the heteroscedastic structure of the linear regression model for possibly contaminated data.
Keywords: human resources; regression; regression quantiles; robustness; tourism infrastructure
Project no.: GA19-05704S (CEP), GA18-01137S (CEP)
Funding provider: GA ČR, GA ČR
Host item entry: RELIK 2020. Conference Proceedings, ISBN 978-80-245-2394-1

Institution: Institute of Computer Science AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: https://relik.vse.cz/2020/download/pdf/294-Kalina-Jan-paper.pdf
Original record: http://hdl.handle.net/11104/0313660

Permalink: http://www.nusl.cz/ntk/nusl-432448


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Research > Institutes ASCR > Institute of Computer Science
Conference materials > Papers
 Record created 2021-02-24, last modified 2023-12-06


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