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Anova power analysis

fpower,a(levels)[b(levels)c(levels)r(levels)delta(value)rho(value)alpha(value)n(sampsize)graph]

Description

fpowerperforms power analysis of anova designs of one, two or three factors. Users are required to include the number of levels of factor a.

fpower Options

the number of levels of factor b (default = 1).b

the number of levels of factor c (default = 1).c

the number of levels of repeated factor (default = 1).r

the effect size (default = .25).delta

the alpha level (default = .05).alpha

the intraclass correlation (default = 0).rho

specific sample size of interest.n

Examples

. fpower, a(4) delta(1.2) graph. fpower, a(4) b(2) delta(0.75) /* power for factor_a when a has 4 levels and factor_b has 2 */ . fpower, a(2) b(4) delta(0.75) /* power for factor_a when a has 2 levels and factor_b has 4 */

AcknowledgementsBased on (copied from) on the SAS macro program, FPOWER.SAS (version 1.2), Created 1990, revised 1995, by Michael Friendly <FRIENDLY@YorkU.CA>.

AuthorPhilip B. Ender UCLA Academic Technology Services enderatucla.edu