Measurement errors in quantile regression models
分位数回归模型中的测量误差AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究测量误差下的分位数回归,以及企业投资条件分布中的异质关系,因此归入分位数与分布效应。
分位数回归模型中的测量误差AI 解读 ↓
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This paper develops estimation and inference for quantile regression models with measurement errors. We propose an easily-implementable semiparametric two-step estimator when repeated measures for the covariates are available. Building on recent theory on Z-estimation with infinite-dimensional parameters, consistency and asymptotic normality of the proposed estimator are established. We also develop statistical inference procedures and show the validity of a bootstrap approach to implement the methods in practice. Monte Carlo simulations assess the finite-sample performance of the proposed methods. We apply the methods to the investment equation model using a firm-level data with repeated measures of investment demand, Tobin’s q. We document strong heterogeneity in the sensitivity of investment to Tobin’s q and cash flow across the conditional distribution of investment. The cash flow sensitivity is relatively larger at the lower part of the distribution, providing evidence that these firms are more exposed to and dependent on fluctuations in internal finance.