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Predictive Forecast (Close, 14)

Welcome to the forum. Sounds more like the past 14 days are used in calibrating a model to obtain the R^2 value. I don't think the R^2 ever refers to the next day. The definition of R^2 is the ...
KaiSqDist's user avatar
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How to prove the inequality for the standard deviation of a linear combination of two random variables

First, transform $σ_{v}^2$ into the form of a standard quadratic function. \begin{aligned} &\sigma _{v}^{2}=s^{2}\sigma _{1}^{2}+\left( 1-s\right) ^{2}\sigma _{2}^{2}+2s\left( 1-s\right) c_{12}\\ &...
bokabokaboka's user avatar

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