[R] Looking for the name of a certain kind of quantile plot
carl at witthoft.com
Wed Apr 4 00:06:18 CEST 2012
While playing with quantile-quantile plots, I wrote up some code which
plots something strangely different. Here's the pseudocode:
testhist <- hist(sample_data)
refhist <- hist(rnorm(n, mean=0,sd=1)) # for some large-ish n
cumtest <- cumsum(testhist)
cumref <- cumsum(refhist)
This produces a straight line of slope 1 for a sample with the same
parameters as the reference sample, and produces S-curves for samples
with different sigmas. A sample with nonzero mean looks almost
exponential (or logarithmic, depending on the sign of the mean).
So my question is: is there a name for this sort of plot, and is it of
any real use in statistical analysis?
Sent from my Cray XK6
"Quidvis recte factum, quamvis humile, praeclarum."
More information about the R-help