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| Regressione Quantile-su-Quantile per Dati Panel× | OLS su Panel (Ordinary Least Squares Raggruppato)× | |
|---|---|---|
| Campo | Econometria | Econometria |
| Famiglia | Regression model | Regression model |
| Anno di origine≠ | 2015 (QQ); panel applications from ~2018 | 1986-2003 |
| Ideatore≠ | Sim and Zhou (cross-section QQ); panel extension in applied energy/finance econometrics | Classical least squares applied to pooled panels; foundational treatment in Hsiao (2003) and Wooldridge (2010) |
| Tipo≠ | Nonparametric quantile regression | Linear panel regression |
| Fonte seminale≠ | Sim, N., & Zhou, H. (2015). Oil prices, US stock return, and the dependence between their quantiles. Journal of Banking and Finance, 55, 1-8. DOI ↗ | Wooldridge, J. M. (2010). Econometric Analysis of Cross Section and Panel Data (2nd ed.). MIT Press. ISBN: 978-0262232586 |
| Alias | Panel QQ regression, panel QQ approach, panel quantile-on-quantile approach, PQQ regression | pooled OLS, pooled ordinary least squares, panel least squares, POLS |
| Correlati≠ | 6 | 4 |
| Sintesi≠ | Panel quantile-on-quantile (QQ) regression jointly maps any quantile of the outcome distribution onto any quantile of the predictor distribution across multiple cross-sectional units observed over time. It generalises Sim and Zhou's (2015) cross-sectional QQ framework to a panel setting, revealing a full dependence surface rather than a single average effect, while accounting for individual heterogeneity through fixed or random effects correction. | Panel OLS — also called Pooled OLS — applies the classical ordinary least squares estimator to panel data by stacking all cross-sectional units and time periods into a single sample. It estimates one common set of slope coefficients under the assumption that the intercept and slopes are homogeneous across units and time. |
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