Explanation:
Proper PIT-based backtesting reveals uniformity and an absence of patterns, supporting the accuracy and independence of risk predictions revolved around actual market conditions. PITs devoid of temporal patterns verify model robustness through time.
A is incorrect. Higher moments primarily reveal skewness or kurtosis, not addressed directly by the PIT uniformity test. C is incorrect. Cyclic trends suggest model instability rather than confirmation of accurate predictions. D is incorrect. Extreme deviations imply incorrect model specifications failing to align with observed data.
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Q.6486 An investment firm is assessing the predictive accuracy of its VaR model using exceedance-based backtesting. It further explores the application of PITs to validate model assumptions thoroughly. What does a proper implementation of PIT-based backtesting reveal about the VaR model?
A
It confirms the presence of higher moments affecting distribution shape.
B
It indicates uniformity and absence of temporal patterns.
C
It highlights cyclic trends and overfitting potential.
D
It shows deviations at the distribution extremes.