There is a good section on curve fitting which is something to avoid when testing investing methods.
Whow! With the other Math sites this will keep me bussy for years just to select the right stuff! But I think all the things on Mathworks you have to pay for. For the moment I have enough free stuff to last a lifetime.
But why must one avoid curve fitting when testing investment methods? Could you explain when curve fitting cwould be used and why it is to be avoided?