International issues, Studies

Estimating Gravity Equation Models in the Presence of Sample Selection and Heteroskedasticity

Gravity models are widely used to explain patterns of trade. However, two stylized features of trade data, sample selection and heteroskedasticity, challenge the estimation of gravity models.

See PDF article here: Estimating Gravity Equation Models in the Presence of Sample Selection and Heteroskedasticity by Bo Xiong and Sixia Chen

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