Blossom (version 1.3)

ptmp: Permutation test for matched pairs

Description

The permutation test for matched pairs (PTMP) is a special case of MRBP, univariate data in two groups and n blocks, used for paired comparisons. Options allows PTMP to perform permutation versions of paired t-tests and Wilcoxon's signed rank test (for ranked data).

Usage

ptmp(data,variables, expon = 1, exact = FALSE, number.perms, save.test)

Value

ptmp returns an object of class PTMPObj.

Details

The PTMP is statistically equivalent to MRBP either command can be used when pairing is indicating by the blocking variable but only ptmp can be used when the observations are paired (next to each other) in the data set. Thus the pairing is indicated by position or by a blocking variable. The different test statistic structures produce an observed delta in PTMP that is exactly twice the observed test statistic for the same problem in MRBP. Also, data in PTMP are aligned to a median of 0 by the structure of the test statistic.

References

Mielke, P.W., Jr., and K.J. Berry. 2001. Permutation methods: A distance function approach. Springer-Verlag.

See Also

mrbp

Examples

print(out <- ptmp(paired1,exact = TRUE))
pvalue(out)