R: Slope ratio assay of panthotenic acid contents in plant...

SRAssay {mratios} | R Documentation

## Slope ratio assay of panthotenic acid contents in plant tissues

### Description

Content of panthotenic acid in a standard and three unknown samples were measured. The response variable is the titer of a sample to pH 6.8.

### Usage

    data(SRAssay)

### Format

A data frame with 34 observations on the following 3 variables.

Response

  a numeric vector, containing the response variable (titer to pH 6.8)

Treatment

  a factor with levels St, U1, U2 and U3, specifying the standard and 3 unknown samples, respectively

Dose

  a numeric vector

### Source

Jensen, D.R. (1989). Joint confidence sets in multiple dilution assays. Biometrical Journal 31, 841-853.

### References

Data originally from Bliss, C.I. (1952). The Statistics of Bioassay. Academic Press, New York.

### Examples

    library(mratios)

    data(SRAssay)

    str(SRAssay)

    plot(Response~Dose, data=SRAssay)

    # library(lattice)
    # xyplot(Response~Dose|Treatment, data=SRAssay)

    # see ?sci.ratio.gen for  the analysis of this dataset

[Package mratios version 1.3.17 Index]