cwhmisc: t3plot – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

t3plot

T3plot

Description

T3 plot for a graphical check on normality together with 95%- and 99%-acceptance regions. If the black line does not cross either the 5% nor the 1% line, the input data are normal with less than 1% error.

Usage

T3plot(x,lab=paste("T3 plot of ",deparse(substitute(x))),
  legend.pos="bottom", cex=0.6, ...)

Arguments

`x`	Data vector.
`lab`	String for heading of plot.
`legend.pos, cex, ...`	see `legend`.

Value

Is called for its side effect to produce a T3 plot.

Author(s)

Sucharita Ghosh, rita.ghosh@wsl.ch,
with cosmetics by Christian W. Hoffmann, christian@echoffmann.ch

References

Ghosh, S. (1996) A new graphical tool to detect non-normality. Journal of the Royal Statistical Society B , 58, 691-702.

Examples

par(mfrow=c(2,2))
  T3plot(rnorm(100))
  T3plot(rnorm(10000))
  T3plot(rnorm(1000)+runif(1000)*0.1,"Mixture,rather well normal")
  T3plot(rnorm(1000)+runif(1000)*10,"Not < 1 percent error for normality")

cwhmisc

Miscellaneous Functions for Math, Plotting, Printing, Statistics, Strings, and Tools

v6.6

GPL (>= 2)

Authors

Christian W. Hoffmann

Initial release

2018-08-24, 10:40:10