Re: [R] Power curves

From: Duncan Murdoch <>
Date: Mon, 14 Apr 2008 06:25:59 -0400

Louisa Hay wrote:
> Hi,
> I am trying to create a power curve to show how the power of a t-test varies depending on the mean. Any ideas how I should go about this?
> Louisa

The pt() function supports a non-centrality parameter, so you can do this calculation directly.

For other situations where the non-null distribution isn't easy to work with, there's always simulation. Just simulate a large number of samples, and compute how many of them are rejected.

Duncan Murdoch mailing list PLEASE do read the posting guide and provide commented, minimal, self-contained, reproducible code. Received on Mon 14 Apr 2008 - 10:31:54 GMT

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