Tena koe Jacob Possibly your best option is to simulate.
HTH .... Peter Alspach -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Jacob Warren (RIT Student) Sent: Wednesday, 13 June 2012 4:40 a.m. To: r-help@r-project.org Subject: [R] Unbalanced Design Power Analysis I have an unbalanced design I would like to run a power analysis on. What I have been able to find has pointed me to using the pwr.f2.test function as described below. My problem is that I don't know how to appropriately define the numerator and demoninator df. If someone can help here is some more info about my design. It is an unbalanced 2^3 x 3 design where the factor with 3 levels is a random effect. So say there are factors A, B, C with 2 levels and D with 3 levels A will have 77 observations at level -1 and 19 at 1 B will have 67 at -1 and 29 at 1 C will have 57 at -1 and 39 at 1 D will have 32 at -1, 0, and 1 General Linear Model Function: pwr.f2.test Arguments: u: Numerator degrees of freedom v: Denominator degrees of freedom f2: Effect Size sig.level: Significance level power: Power of test ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. The contents of this e-mail are confidential and may be subject to legal privilege. If you are not the intended recipient you must not use, disseminate, distribute or reproduce all or any part of this e-mail or attachments. If you have received this e-mail in error, please notify the sender and delete all material pertaining to this e-mail. Any opinion or views expressed in this e-mail are those of the individual sender and may not represent those of The New Zealand Institute for Plant and Food Research Limited. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
