Statistics


Table 8: How to convert statistics from $ P$, $ LSD$, or $ MSD$ to $ SE$
from to conversion rcode notes
P SE $ SE = \frac{\bar{X}_1-\bar{X}_2}{t_{1-P/2,2n-2}\sqrt{2/n}}$ (x1-x2)/(qt(1-P/2,2*n-2)*sqrt(2/n)) $ \bar{X}_{1,2}$ are two means being compared.
LSD SE $ SE = \frac{LSD}{t_{1-\alpha/2,n}*\sqrt{2b}}$ LSD/(qt(1-P/2,n)*sqrt(2*b)) where $ b$ is the number of blocks, $ n$ is the number of replicates, and $ n=b$ in a Randomized Complete Block Design
MSD SE $ SE = \frac{MSD*n}{t_{1-\alpha, 2n-2}*\sqrt{2}}$ msd*n/(qt(1-P/2,2*n-2)*sqrt(2))  
       



David 2011-10-07