Cube point picking is the three-dimensional case of hypercube point picking.
The mean distance from a point chosen uniformly inside a unit cube to its center is given by
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(1)
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(2)
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(3)
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(4)
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Similarly, the mean distance from a point chosen uniformly inside a unit cube to a fixed corner is given by
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(5)
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(6)
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(7)
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(8)
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(9)
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where
is the
-box integral.
The mean distance from the center of a unit cube to a point chosen uniformly on a given face is
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(10)
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(11)
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(12)
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(13)
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(OEIS A097047).