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The science that describes the management, creation and study of money, banking, credit, investments, assets and liabilities.

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Calculating Variance of a random variable with time dependence

Imagine that $ Y $ is a sum of independent increments on time intervals $ \Delta t $ over the course of one year. I.e., we are assuming that $$ Y = \sum_i \Delta y_i .$$ Now, in 1 year, we have $\frac …
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