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The act of generating a sequence of numbers or symbols randomly, or (almost always) pseudo-randomly; i.e., with lack of any predictability or pattern.

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Permutations, shuffling WITHIN but not BETWEEN groups [closed]

In R, I need to make 100 repeat random permutations of group orders, keeping the composition and sizes of groups the same, but the order within the groups needs to be randomly shuffled (100 times) By …
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