RMstudy: Collaborative study results for metals in a reference...
In metRology: Support for Metrological Applications
RMstudy R Documentation
Collaborative study results for metals in a reference material certification study
Description
A data frame containing reported replicate results, in mg/L, for elements reported
in an inter-laboratory certification study for a candiate drinking reference material.
Usage
data(RMstudy)
Format
A data frame with 145 observations on the following 9 variables.
Laba factor with levels Lab1 - Lab29
Arsenica numeric vector
Cadmiuma numeric vector
Chromiuma numeric vector
Coppera numeric vector
Leada numeric vector
Manganesea numeric vector
Nickela numeric vector
Zinca numeric vector
Details
The data set includes results for eight of a total of 23 elements studied in an
inter-laboratory study of a candidate reference material. All observations are
reported in ug/l.
Laboratories were asked to report 5 replicate observations for each element. Replicate
observations appear on separate rows. Most but not all laboratories reported five
replicates, and some laboratories reported no results for some elements. The eight
elements included in the data set are those for which no more than three laboratories
failed to report any results. Missing observations are coded NA.
Laboratories were coded anonymously in order of receipt of results.
Source
LGC limited, Teddington, UK (Private communication).
metRology documentation built on Dec. 16, 2024, 3:01 a.m.
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| RMstudy | R Documentation |
Collaborative study results for metals in a reference material certification study
Description
A data frame containing reported replicate results, in mg/L, for elements reported in an inter-laboratory certification study for a candiate drinking reference material.
Usage
data(RMstudy)
Format
A data frame with 145 observations on the following 9 variables.
Laba factor with levels
Lab1-Lab29Arsenica numeric vector
Cadmiuma numeric vector
Chromiuma numeric vector
Coppera numeric vector
Leada numeric vector
Manganesea numeric vector
Nickela numeric vector
Zinca numeric vector
Details
The data set includes results for eight of a total of 23 elements studied in an
inter-laboratory study of a candidate reference material. All observations are
reported in ug/l.
Laboratories were asked to report 5 replicate observations for each element. Replicate
observations appear on separate rows. Most but not all laboratories reported five
replicates, and some laboratories reported no results for some elements. The eight
elements included in the data set are those for which no more than three laboratories
failed to report any results. Missing observations are coded NA.
Laboratories were coded anonymously in order of receipt of results.
Source
LGC limited, Teddington, UK (Private communication).
R Package Documentation
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