FinneyCorr: Finney's correction to log normally distributed data.
Description
FinneyCorr: Finney's correction factor K in $x = e^{ln x} * K$, with $K = e^{s_{\ln}^2/2} \,
\left{ 1-\frac{s_{\ln}^2}{4n}(s_{\ln}^2+2)+\frac{s_{\ln}^4}{96n^2}(3s_{\ln}^4+44s_{\ln}^2+84)
\right}$, 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".}
FinneyCorr(0.346274,24+3) #> 1.059306936
x <- rnorm(100); y <- rnorm(100)
lmo <- lm(y ~x)
FC.lm(lmo)
s.lm(lmo)
Finney D.J., 1941. On the distribution of a variable whose logarithm is normally distributed. J. R. Stat. Soc., B 7: 155-161
[object Object],[object Object],[object Object]
models
regression