inspect {sse} | R Documentation |
Creating a plot that allows to inspect the sample size calculation.
inspect(object)
object |
An object of class |
## defining the range of n and theta to be evaluated psi <- powPar(theta = seq(from = 0.5, to = 1.5, by = 0.1), n = seq(from = 20, to = 60, by = 2), muA = 0, muB = 1) ## defining a power-function powFun <- function(psi){ power.t.test(n = n(psi)/2, delta = pp(psi, "muA") - pp(psi, "muB"), sd = theta(psi) )$power } ## evaluating the power-function for all combinations of n and theta calc <- powCalc(psi, powFun) ## adding example at theta of 1 and power of 0.9 pow <- powEx(calc, theta = 1, power = 0.9) ## drawing an inspection plot inspect(pow)