A permutation is the way a set can be arranged, and where the order of arrangement matters. There are three different types of permutations, including one without repetition and one with repetition.

Mystery Math Whiz and Novelist Advance Permutation Problem A new proof from the Australian science fiction writer Greg Egan and a 2011 proof anonymously posted online are now being hailed as ...

Polynomial time algorithms are presented for inverting permutation tests. The one-sample permutation test is inverted to make confidence statements about a location parameter, and the two-sample ...

In observational studies, treatments are not randomly assigned to experimental units, so that randomization tests and their associated interval estimates are not generally applicable. In an effort to ...