Assume the time series $\{X_t\}_{t=1}^{260}$ with elements $X_t \in \mathbb{R}$.
What is the mathematical notation of the second and the third lowest values from that time series?
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3https://en.wikipedia.org/wiki/Order_statistic – Andrew Jan 05 '23 at 12:55
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@AndrewZhang Thanks. – Whitebeard13 Jan 05 '23 at 15:59