Advances and Applications in Statistics
Volume 23, Issue 1, Pages 43 - 52
(July 2011)
|
|
SADDLEPOINT APPROXIMATION FOR TWO SAMPLE LINEAR RANK TESTS
Almutairi Alya O. and Ehab F. Abd-Elfattah
|
Abstract: Test statistics from the two sample linear rank classes are commonly used to compare the treatment group with the control group. This paper uses saddlepoint methods to determine mid-p-values from the null permutation distributions of tests from the two sample linear rank classes. It is seen that saddlepoint computations replace the permutation simulations and provide mid-p-values that are virtually exact for all the practical purposes. |
Keywords and phrases: linear rank test, mid-p-value, permutation distribution, saddlepoint approximation. |
|
Number of Downloads: 364 | Number of Views: 1089 |
|