Does Statistical Significance Help to Evaluate Predictive Performance of Competing Models?
Levent Bulut ()
Journal of Economics and Financial Analysis, 2017, vol. 1, issue 1, 1-13
In Monte Carlo experiment with simulated data, we show that as a point forecast criterion, the Clark and West's (2006) unconditional test of mean squared prediction errors does not reflect the relative performance of a superior model over a relatively weaker one. The simulation results show that even though the mean squared prediction errors of a constructed superior model is far below a weaker alternative, the Clark- West test does not reflect this in their test statistics. Therefore, studies that use this statistic in testing the predictive accuracy of alternative exchange rate models, stock return predictability, inflation forecasting, and unemployment forecasting should not weight too much on the magnitude of the statistically significant Clark-West tests statistics.
Keywords: Model comparison; Predictive accuracy; Point-forecast criterion; The Clark and West test; Monte-Carlo methods; Forecast comparison. (search for similar items in EconPapers)
JEL-codes: C52 F37 F47 G17 (search for similar items in EconPapers)
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Persistent link: https://EconPapers.repec.org/RePEc:trp:01jefa:jefa0003
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