| power.sim {NCStats} | R Documentation |
This function plots the null and actual distributions, highlights the rejection region and the power region, and allows the user to manipulate the effect size, standard deviation, sample size, and alpha to determine the effect on power.
power.sim(mu0=100,s.mua=95,s.sigma=10,s.n=30,s.alpha=0.05,lower.tail=TRUE)
mu0 |
The null hypothesized mean. |
s.mua |
The starting value for the actual population mean. |
s.sigma |
The starting value for the actual population standard deviation. |
s.n |
The starting value for the sample size. |
s.alpha |
The starting value for alpha. |
lower.tail |
A logical indicating if the rejection region is into the lower tail or not. |
None, but a dynamic graphic with slider bars will be produced.
On first call a dialog box with four sliders will appear in the upper-left corner of the R window. A graphic will not be seen until an item in the dialog box is changed. At this time, the dialog box will appear to disappear. However, it has simply been minimized and can be reaccessed as all minimized programs are accessed. This “bug” only appears when the function is started and upon first change of an item in the dialog box.
Derek H. Ogle, dogle@northland.edu
## Not run by examples(). Copy and try in an interactive R session ## Not run: power.sim()