pilotData {SSPA} | R Documentation |
User friendly interface to class "PilotData"
pilotData(statistics = NULL, samplesize = NULL, distribution = c("norm", "t", "f", "chisq"), ...)
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 |
In the two-group case the effective sample size is defined as the square-root of the inverse of 1/n1 + 1/n2.
object of class "PilotData"
Maarten van Iterson
pd <- pilotData(statistics=rnorm(100), samplesize=10, distribution="norm") pd plot(pd)