Author Topic: Graph up/down Trend formula  (Read 9153 times)

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Graph up/down Trend formula
« on: 04 Dec 2013, 22:29 »
Hi, what is the formula behind the up/down trend line as shown on the "Change of Total Won/Lost over time" graph.  It looks like it could be an Exponential Moving Average (EMA) but if I try to model the same in excel using the same bets taken from X-Feeder statement I don't get the same result.

I tried : EMA = alpha*balance + (1-alpha) * previous EMA

where alpha (damping constant) is any value from >0, <1


Please note, BetFair is seems to be currently OFFLINE