Introduction - If you have any usage issues, please Google them yourself
It is sample.based distribution-free method,which makes use of“permutation or combination”to get the theo.
retical sampling distribution of the constmcted“statistics”,or get
the approximate distribution by simulation under
the nuU hypothesis,gets the pmbability of the sample-at—hand,and dmws a conclusion after comparing the probability
w“h the size of the test.It especiaUy supports
small samples without distributional assumptions(e.g.normdb2y)and
complex des培ns for which traditional methods are hard to solVe.