SSPA (version 2.12.0)

pilotData: User friendly interface to class "PilotData"

Description

User friendly interface to class "PilotData"

Usage

pilotData(statistics = NULL, samplesize = NULL, distribution = c("norm", "t", "f", "chisq"), ...)

Arguments

statistics

vector of test statistics

samplesize

total sample size of the pilot-data or effective sample size in two-group case (see Details for more information).

distribution

type of the null/alternative distribution, one of 'norm', 't', 'f' or 'chisq'

...

additional arguments for the distribution like degrees of freedom

Value

object of class "PilotData"

Details

In the two-group case the effective sample size is defined as the square-root of the inverse of 1/n1 + 1/n2.

Examples

pd <- pilotData(statistics=rnorm(100), samplesize=10, distribution="norm")
pd
plot(pd)