-------- Original Message -------- Subject: advice on outputs from twogroup Date: Mon, 21 Feb 2011 13:16:00 -0500 From: Megan Dufton <[email protected]> To: [email protected] Hello morphometric users, I'm still very new to morphometrics and am struggling with a few aspects. I have a control group and a surgery group which I would like to compare. The only thing is my sample numbers are low around n=6 and I have chosen 42 landmarks. The 2 groups appear to be quite different. I have used twogroup to compare the control and surgery groups, but now I'm lost on what the output is telling me. With the f-test, procrustes I get data like Bootstrapped F-test, F-Score : 7.18 Significance level:p= 0.0100 Bootstraps 100.0 Distance Between Means 0.1688 and with Goodall's f-test I get data like: Bootstrapped Full P Distance between Means 0.1682 95 percent Range 0.1409 0.2032 Standard Error in D 0.0171 but I'm really not sure what this all means (I have very limited stats background). The first test indicates sign. but how do interpret the second test and which one should I be using? thank you in advance for any advice you can give me. Megan
