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Michael2023-07-31 14:29:25
学员你好,
Which of the following statements regarding verification of a VaR model by examining its failure rates is false?
I. The frequency of exceptions should correspond to the confidence level used for the model.【VaR模型的】
II. According to Kupiec (1995), we should reject the hypothesis that the model is correct if the LR > 3.84.
III. Backtesting VaR models with lower confidence levels【回测模型的】 is difficult because the number of exceptions is not high enough to provide meaningful information.
IV. The range for the number of exceptions must strike a balance between the chances of rejecting an accurate model (a type 1 error) and the chance of accepting an inaccurate model (a type2 error).
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