diff options
Diffstat (limited to 'man')
| -rw-r--r-- | man/lod.Rd | 8 | ||||
| -rw-r--r-- | man/loq.Rd | 6 |
2 files changed, 9 insertions, 5 deletions
@@ -52,14 +52,16 @@ is present (type II or false negative error), is beta (also a one-sided significance test). } \note{ -* The default values for alpha and beta are the ones recommended by IUPAC. -* The estimation of the LOD in terms of the analyte amount/concentration xD +\itemize{ +\item The default values for alpha and beta are the ones recommended by IUPAC. +\item The estimation of the LOD in terms of the analyte amount/concentration xD from the LOD in the signal domain SD is done by simply inverting the calibration function (i.e. assuming a known calibration function). -* The calculation of a LOD from weighted calibration models requires a +\item The calculation of a LOD from weighted calibration models requires a weights argument for the internally used \code{\link{predict.lm}} function, which is currently not supported in R. } +} \examples{ m <- lm(y ~ x, data = din32645) @@ -61,11 +61,13 @@ where c(L) is half of the length of the confidence interval at the limit L \code{\link{inverse.predict}}, and L is obtained by iteration. } \note{ -* IUPAC recommends to base the LOQ on the standard deviation of the +\itemize{ +\item IUPAC recommends to base the LOQ on the standard deviation of the signal where x = 0. -* The calculation of a LOQ based on weighted regression is non-standard and +\item The calculation of a LOQ based on weighted regression is non-standard and therefore not tested. Feedback is welcome. } +} \examples{ m <- lm(y ~ x, data = massart97ex1) |