lmm2F: Compute power for a Two Factor Within Subjects Using Linear...

In pwr2ppl: Power Analyses for Common Designs (Power to the People)

Compute power for a Two Factor Within Subjects Using Linear Mixed Models with up to two by 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 Two Factor Within Subjects Using Linear Mixed Models with up to two by four levels. Takes means, sds, and sample sizes for each group. Alpha is .05 by default, alternative values may be entered by user

Usage

lmm2F(
  m1.1,
  m2.1,
  m3.1 = NA,
  m4.1 = NA,
  m1.2,
  m2.2,
  m3.2 = NA,
  m4.2 = NA,
  s1.1 = NA,
  s2.1 = NA,
  s3.1 = NA,
  s4.1 = NA,
  s1.2 = NA,
  s2.2 = NA,
  s3.2 = NA,
  s4.2 = NA,
  r12 = NULL,
  r13 = NULL,
  r14 = NULL,
  r15 = NULL,
  r16 = NULL,
  r17 = NULL,
  r18 = NULL,
  r23 = NULL,
  r24 = NULL,
  r25 = NULL,
  r26 = NULL,
  r27 = NULL,
  r28 = NULL,
  r34 = NULL,
  r35 = NULL,
  r36 = NULL,
  r37 = NULL,
  r38 = NULL,
  r45 = NULL,
  r46 = NULL,
  r47 = NULL,
  r48 = NULL,
  r56 = NULL,
  r57 = NULL,
  r58 = NULL,
  r67 = NULL,
  r68 = NULL,
  r78 = NULL,
  r = NULL,
  s = NULL,
  n,
  alpha = 0.05
)

Arguments

m1.1	Mean of first level factor 1, 1st level factor two
m2.1	Mean of second level factor 1, 1st level factor two
m3.1	Mean of third level factor 1, 1st level factor two
m4.1	Mean of fourth level factor 1, 1st level factor two
m1.2	Mean of first level factor 1, 2nd level factor two
m2.2	Mean of second level factor 1, 2nd level factor two
m3.2	Mean of third level factor 1, 2nd level factor two
m4.2	Mean of fourth level factor 1, 2nd level factor two
s1.1	Standard deviation of first level factor 1, 1st level factor two
s2.1	Standard deviation of second level factor 1, 1st level factor two
s3.1	Standard deviation of third level factor 1, 1st level factor two
s4.1	Standard deviation of forth level factor 1, 1st level factor two
s1.2	Standard deviation of first level factor 1, 2nd level factor two
s2.2	Standard deviation of second level factor 1, 2nd level factor two
s3.2	Standard deviation of third level factor 1, 2nd level factor two
s4.2	Standard deviation of forth level factor 1, 2nd level factor two
r12	correlation Factor 1, Level 1 and Factor 1, Level 2
r13	correlation Factor 1, Level 1 and Factor 1, Level 3
r14	correlation Factor 1, Level 1 and Factor 1, Level 4
r15	correlation Factor 1, Level 1 and Factor 2, Level 1
r16	correlation Factor 1, Level 1 and Factor 2, Level 2
r17	correlation Factor 1, Level 1 and Factor 2, Level 3
r18	correlation Factor 1, Level 1 and Factor 2, Level 4
r23	correlation Factor 1, Level 2 and Factor 1, Level 3
r24	correlation Factor 1, Level 2 and Factor 1, Level 4
r25	correlation Factor 1, Level 2 and Factor 2, Level 1
r26	correlation Factor 1, Level 2 and Factor 2, Level 2
r27	correlation Factor 1, Level 2 and Factor 2, Level 3
r28	correlation Factor 1, Level 2 and Factor 2, Level 4
r34	correlation Factor 1, Level 3 and Factor 1, Level 4
r35	correlation Factor 1, Level 3 and Factor 2, Level 1
r36	correlation Factor 1, Level 3 and Factor 2, Level 2
r37	correlation Factor 1, Level 3 and Factor 2, Level 3
r38	correlation Factor 1, Level 3 and Factor 2, Level 4
r45	correlation Factor 1, Level 4 and Factor 2, Level 1
r46	correlation Factor 1, Level 4 and Factor 2, Level 2
r47	correlation Factor 1, Level 4 and Factor 2, Level 3
r48	correlation Factor 1, Level 4 and Factor 2, Level 4
r56	correlation Factor 2, Level 1 and Factor 2, Level 2
r57	correlation Factor 2, Level 1 and Factor 2, Level 3
r58	correlation Factor 2, Level 1 and Factor 2, Level 4
r67	correlation Factor 2, Level 2 and Factor 2, Level 3
r68	correlation Factor 2, Level 2 and Factor 2, Level 4
r78	correlation Factor 2, Level 3 and Factor 2, Level 4
r	sets same correlations between DVs on all factor levels (seriously, just use this)
s	sets same standard deviation for factor levels (see comment above)
n	Sample size for first group
alpha	Type I error (default is .05)

Value

Power for the Two Factor Within Subjects LMM

Examples

lmm2F(m1.1=-.25,m2.1=0,m1.2=-.25,m2.2=.10,s1.1=.4,s2.1=.5,s1.2=.4,s2.2=.5,r=.5,n=200)

pwr2ppl documentation built on Sept. 6, 2022, 5:06 p.m.