Bootstrap inference in regressions with estimated factors and serial correlation
This
paper considers bootstrap inference in a factor-augmented regression context
where the errors could potentially be serially correlated. This generalizes
results in Gonçalves and Perron (2013) and makes the bootstrap applicable to
forecasting contexts where the forecast horizon is greater than one. We propose
and justify two residual-based approaches, a block wild bootstrap (BWB) and a
dependent wild bootstrap (DWB). Our simulations document improvement in
coverage rates of confidence intervals for the coefficients when using BWB or
DWB relative to both asymptotic theory and the wild bootstrap when serial
correlation is present in the regression errors.
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