a) I can handle 20 losing trades if they are equal to 2% of my account balance in total (i.e. 20 x 0.1% of fixed account balance risked at the start of each day/week/month).
b) Otherwise I can handle 10 losses if they are equal to 2% of my balance (double risked per trade of above.)
c) Otherwise I can handle 4 losses @ 0.5% per trade, again 2% of my handle.
d) But I prefer to risk 2% on one trade, again 2% of my handle.
So if I do 150 trades of (a) or 15 trades of (d) I should about end up the same win/loss % wise. but Im doing it at 10 times the speed.
Also, @ (d), I would want that the standard deviation away from the mean losses over the past month to be nice and flat, otherwise I would drop back to (c), etc.. black swans are black swans though, so again, to play it safe switch down. For this stuff to work - stick to it for a month, aggresively at least fortnightly, flip fliping dont cut it.
(Mean/Mode/Median to work out these things?), I would stick to the mean over the last four weeks of trading (for me because I track the lunar cycle - I like to bring everything back to that for my analysis).
(d) when risking bigger bucks, if your down and want to make back the loss, its harder to wait around with your rational mind intact , whereas with (1) its no big deal, but the tendency is there to go after everything, therefore reducing the win/loss percentage. (1) is hard though when you only got a few thou in your account, but whatever it takes, right?
So, If you can somehow find where you are at in the learning curve and then slide into that way of doing things, then live long and prosper.
This assumes that the dollar values above remain constant in the above examples.