rrcov (version 0.3-07)

salinity: Salinity Data

Description

This is a data set consisting of measurements of water salinity (i.e., its salt concentration) and river discharge taken in North Carolina's Pamlico Sound; This dataset was listed by Ruppert and Carroll (1980). In Carrol and Ruppert (1985) the physical background of the data is described. They indicated that observations 5 and 16 correspond to periods of very heavy discharge and showed that the discrepant observation 5 was masked by observations 3 and 16 i.e. only after deletion of these observations it was possible to identify the influential observation 5. This data set is a prime example of the masking effect.

Usage

data(salinity)

source

P. J. Rousseeuw and A. M. Leroy (1987) Robust Regression and Outlier Detection. Wiley, p.82, table 5.

Examples

data(salinity)
covMcd(salinity.x)

summary(lm.salinity <- lm(salinity.y ~ salinity.x))