stdDeviations {GroupSeq}R Documentation

Standard deviations are calculated

Description

Standard deviations are calculated.

Usage

stdDeviations(n, t2)

Arguments

n is the number of interim analyses.
t2 is the 'second' time scale, used for the covariance of sequential statistics, usually number of events or subjects.

Value

standardDeviation is the standard deviation of the process increment.
standardDeviationProcess is the standard deviation of the process.

Note

This function is meant to be called in context of using groupseq

Author(s)

Roman Pahl

See Also

groupseq

Examples

## simple example
stdDeviations(3, c(0.33,0.66,1.0))
## with following result:
# $standardDeviation
# [1] 0.5744563 0.5744563 0.5830952
#
# $stdvOfTheProcess
# [1] 0.5744563 0.8124038 1.0000000


[Package GroupSeq version 1.0 Index]