Hi,

I need to calculate the volatility of several indices on a yearly basis.
example:
http://www.bfs.admin.ch/bfs/portal/d...s_aktuell.html

So I take the the info of january each year, calculate the %-difference
(2008-2007)/2007, then take the average of both the info and %-difference...
But how can I calculate the volatility from that ? Am quite bad at (adv.) maths, and couldn't figure out all the experts explanation found on the web.
Any ideas anyone ?
Thanks a lot,

Simon