what does “out of sample profit” mean in dashboard????

[Cristian Nembrini]

Hi! Can you help me understand the meaning of this message on the dashboard? If I set the dashboard to 1 month, I see the profit of the month in the table and above it “out of sample profit” with another profit and a different number of open trades.
What does it mean?

[Juan Guirao]

Out-of-sample profit means this is the profit result obtained by the EA with new price data, which the EA had never seen before.

The EA is optimized with “in-sample” price data, up to a certain date. Beyond the end of the in-sample period, we are dealing with “future” or live price action, which was not used to optimize the EA.

The out-of-sample performance is an indication (but not a guarantee) of potential future performance.

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