AQuality (version 1.4)

datavalidation: Data Sets~~

Description

Data.frame with data for calculating the quality parameters of a technique for the measurement of a chemical component of water with the validation() function. The data.frame includes concentration and absorbance measurement of standards of the calibration curve and a solution of known concentration, called quality control (qc). The data.frame includes measurements of the absorbance of the tube at three different days. Column 1: name of the tube. The tubes b, s1, s2,s3 and s4 represent different concentrations of a calibration curve. Column 2: concentration: the concentration of each tube, expressed in micrograms. Column 3: abs: absorbance of each tube which were measured spectrophotometrically. Column 4: day: the day when the measurement was done.

Usage

data("datavalidation")

Format

A data frame with 46 measurement of the following variables.

tube

a character vector

concentration

a numeric vector

abs

a numeric vector

day

a numeric vector

Examples

# Including data.frame: datavalidation in workspace.
data("datavalidation")
# Column names of data.frame: datavalidation
names(datavalidation) 
# Data set type of columns of data.frame: datavalidation.
str(datavalidation)
# Calculation of quality parameters of the Total Kjeldhal Nitrogen (tkn) measurement technique
validation(datavalidation,numest=4,measurementunit='ug',techniquename='tkn',graph=TRUE)