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Short run and long run causality in time series: Inference
(Université de Montréal. Département de sciences économiques., 2003)
We propose methods for testing hypotheses of non-causality at various horizons, as defined in Dufour and Renault (1998, Econometrica). We study in detail the case of VAR models and we propose linear methods based on running ...
Identification, Weak Instruments and Statistical Inference in Econometrics
(Université de Montréal. Département de sciences économiques., 2003)
We discuss statistical inference problems associated with identification and testability in econometrics, and we emphasize the common nature of the two issues. After reviewing the relevant statistical notions, we consider ...
Projection-Based Statistical Inference in Linear Structural Models with Possibly Weak Instruments
(Université de Montréal. Département de sciences économiques., 2003)
It is well known that standard asymptotic theory is not valid or is extremely unreliable in models with identification problems or weak instruments [Dufour (1997, Econometrica), Staiger and Stock (1997, Econometrica), Wang ...
Finite-Sample Diagnostics for Multivariate Regressions with Applications to Linear Asset Pricing Models
(Université de Montréal. Département de sciences économiques., 2003)
In this paper, we propose several finite-sample specification tests for multivariate linear regressions (MLR) with applications to asset pricing models. We focus on departures from the assumption of i.i.d. errors assumption, ...
Exact Skewness-Kurtosis Tests for Multivariate Normality and Goodness-of-fit in Multivariate Regressions with Application to Asset Pricing Models
(Université de Montréal. Département de sciences économiques., 2003)
We study the problem of testing the error distribution in a multivariate linear regression (MLR) model. The tests are functions of appropriately standardized multivariate least squares residuals whose distribution is ...
Méthodes d’inférence exactes pour un modèle de régression avec erreurs AR(2) gaussiennes
(Université de Montréal. Département de sciences économiques., 2003)
Ce texte propose des méthodes d’inférence exactes (tests et régions de confiance) sur des modèles de régression linéaires avec erreurs autocorrélées suivant un processus autorégressif d’ordre deux [AR(2)], qui peut être ...
Tests multiples simulés et tests de normalité basés sur plusieurs moments dans les modèles de régression
(Université de Montréal. Département de sciences économiques., 2005)
Cet article illustre l’applicabilité des méthodes de rééchantillonnage dans le cadre des tests multiples (simultanés), pour divers problèmes économétriques. Les hypothèses simultanées sont une conséquence habituelle de la ...
Distribution-Free Bounds for Serial Correlation Coefficients in Heteroskedastic Symmetric Time Series
(Université de Montréal. Département de sciences économiques., 2005)
We consider the problem of testing whether the observations X1, ..., Xn of a time series are independent with unspecified (possibly nonidentical) distributions symmetric about a common known median. Various bounds on the ...
Testing Mean-Variance Efficiency in CAPM with Possibly Non-Gaussian Errors : An Exact Simulation-Based Approach
(Université de Montréal. Département de sciences économiques., 2002)
In this paper we propose exact likelihood-based mean-variance efficiency tests of the market portfolio in the context of Capital Asset Pricing Model (CAPM), allowing for a wide class of error distributions which include ...
Asymptotic Distribution of a Simple Linear Estimator for VARMA Models in Echelon Form
(Université de Montréal. Département de sciences économiques., 2005)
In this paper, we study the asymptotic distribution of a simple two-stage (Hannan-Rissanen-type) linear estimator for stationary invertible vector autoregressive moving average (VARMA) models in the echelon form representation. ...