[R] Quantiles and QQ plots
daniel at umd.edu
Sat Dec 1 03:28:15 CET 2007
get quantiles for a normal with mean and standard deviation of x:
 3.76997 5.50000 7.23003
to get the quantile plot install library "car" and load library by typing in
the R prompt: library(car)
But you can easily look at the histogram of your vector - hist(x) - to see
that this does not look very normal
Von: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] Im
Auftrag von alfieim29
Gesendet: Friday, November 30, 2007 6:26 PM
An: r-help at r-project.org
Betreff: [R] Quantiles and QQ plots
I have 20 variables:
How do I calculate the corresponding quantiles from a normal distribution
with the same mean and variance as the sample?
Also, how do I draw a QQ plot of the data?
Thanks for any help!
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