win1Ftrends {pwr2ppl} | R Documentation |
Compute power for a One Factor Within Subjects Trends with up to four levels. Takes means, sds, and sample sizes for each group. Alpha is .05 by default, alternative values may be entered by user
Description
Compute power for a One Factor Within Subjects Trends with up to four levels. Takes means, sds, and sample sizes for each group. Alpha is .05 by default, alternative values may be entered by user
Usage
win1Ftrends(
m1,
m2,
m3 = NA,
m4 = NA,
s1,
s2,
s3 = NULL,
s4 = NULL,
r12,
r13 = NULL,
r14 = NULL,
r23 = NULL,
r24 = NULL,
r34 = NULL,
n,
alpha = 0.05
)
Arguments
m1 |
Mean of first time point |
m2 |
Mean of second time point |
m3 |
Mean of third time point |
m4 |
Mean of fourth time point |
s1 |
Standard deviation of first time point |
s2 |
Standard deviation of second time point |
s3 |
Standard deviation of third time point |
s4 |
Standard deviation of forth time point |
r12 |
correlation Time 1 and Time 2 |
r13 |
correlation Time 1 and Time 3 |
r14 |
correlation Time 1 and Time 4 |
r23 |
correlation Time 2 and Time 3 |
r24 |
correlation Time 2 and Time 4 |
r34 |
correlation Time 3 and Time 4 |
n |
Sample size for first group |
alpha |
Type I error (default is .05) |
Value
Power for the One Factor Within Subjects Trends
Examples
win1Ftrends(m1=-.25,m2=-.15,m3=-.05,m4=.05,s1=.4,s2=.5,s3=.6,s4=.7,
r12=.50, r13=.30, r14=.15, r23=.5, r24=.30, r34=.50, n=25)
[Package pwr2ppl version 0.5.0 Index]