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Drawing conclusions about population parameters from sample data. See https://en.wikipedia.org/wiki/Inference and https://en.wikipedia.org/wiki/Statistical_inference
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Standard error of estimated covariance
Let $X_1,...,X_n$ and $Y_1,...,Y_n$ be two independent random samples from $\mathcal{N}(\mu, \sigma^2)$ where both $\mu$ and $\sigma$ are unknown parameters.
I estimate their covariance using:
$$\hat{ …