The answer can be found in the idea of relationship between different currency pairs. The pairs with the same currency is concerned are related and behave in a similar way. That is to say, if one pair is moving in one direction, others with the same currency might be trending too. However, that won’t be that obvious so we use that correlation. And you can see where it’s helpful for currency trading robot development.It is an additional variable that plays the part in profitability.