VaR and ES of r = μ + √s·z, z standard normal or — with nu — Student-t (skewed t with lambda too) standardised to unit variance, the innovations a fit assumed. For a one-step forecast: mean μ, variance s_{T+1}.
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With nu, a skewed t (Hansen's, as fitted with dist: 'skewt').
dist: 'skewt'
VaR and ES of r = μ + √s·z, z standard normal or — with
nu— Student-t (skewed t withlambdatoo) standardised to unit variance, the innovations a fit assumed. For a one-step forecast:meanμ,variances_{T+1}.