Description Usage Arguments Value Author(s) See Also
It creates a plot or a table for the sample size, type I error rate, and power versus standard deviation. If desired, it may represent several actual expected value differences for comparison.
1 2 |
delta |
Number. Expectation difference of two samples. |
Delta |
Number/ vector of numbers. Relevant difference of expected values in the alternative hypothesis. |
sd |
Number. Assumed standard deviation of the data. |
test |
Number. What type of hypothesis test should be performed. One-sided (Superiority/ |
alpha |
Number. Desired alpha-level of the test. |
beta |
Number. Acceptable beta error of the test. |
prop |
Two numbers/ Vector of numbers. Timing of the internal pilot study depending on the originally |
adj |
Logical. Should the one-sample variance, calculated in the internal pilot study, be adjusted? |
rule |
Logical. Should the sample size adjustment rule be applied by Wittes and Brittain? |
nbound |
Number. Upper limit of the sample size. |
simu |
Number. How many simulations should be performed? |
create |
"plot" if a plot is to be returned. |
It returns a plot.
Csilla van Lunteren
pow
ggplot2
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