Has anyone ever performed a back test on any pair, lets say EUR/USA for example, to determine if their are any regularities with relation to time and fluctuation? I'm just wondering if there may be a possible trend here or not.

I guess another way to express it would be to say; 'Does the EUR or USD go up or down in a certain time frame each day, or possibly each week, with more regularity or not? I hope I'm making sense here. My mind knows what I mean but I'm not sure if my fingers do. buddy b