you have to really understand those concepts. If you are a real risk manager, it is a piece of cake. However, many of us are not risk managers. and risk managers don't need those certificate.
Do u remember there is a question regarding HS VAR? It is about adding 10 day data into 50 day data. The worst return is 2.xx % in the 10 day sample. Anyone chooseAnswer D ? 6.xx%?