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## Main Question or Discussion Point

Hi all,

in probability what does E[|X|] mean? If I am not wrong |X| means absolute but when we use |...| (perpendicular bars) then what does it mean when we use it in sense of probability?

in probability what does E[|X|] mean? If I am not wrong |X| means absolute but when we use |...| (perpendicular bars) then what does it mean when we use it in sense of probability?

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