FinneyCorr {cwhmath} | R Documentation |
FinneyCorr: Finney's correction factor K in x = e^{ln x} * K, with newline K = e^{s_{ln}^2/2} , <=ft{ 1-frac{s_{ln}^2}{4n}(s_{ln}^2+2)+frac{s_{ln}^4}{96n^2}(3s_{ln}^4+44s_{ln}^2+84) right} , to be used if ln x is normally distributed with standard deviation s_{ln x}. FC.lm, s.lm: Finney's correction and standard deviation extracted from an object of class "lm".
FinneyCorr(s,n) FC.lm(lmobj) s.lm(lmobj)
s |
Standard deviation of log data. |
n |
Number of data points. |
lmobj |
An object of class "lm". |
Christian W. Hoffmann, christian.hoffmann@wsl.ch,
http://www.wsl.ch/staff/christian.hoffmann
Finney D.J., 1941. On the distribution of a variable whose logarithm is normally distributed. J. R. Stat. Soc., B 7: 155-161
FinneyCorr(0.346274,24+3) #> 1.059306936 x <- rnorm(100); y <- rnorm(100) lmo <- lm(y ~x) FC.lm(lmo) s.lm(lmo)