Thank you for the guidance.   

I gave the qreference, but I guess I don't get it.  

What are the other plots that are generated?  It is my understanding that qreference only produces normal QQ plots,
so should the take away be if my data distribution, the first plot,
isn't similar to any of the other Q-Q plots, then it is not normal?

I was hoping to be able to compare my distribution in Q-Q Plot  against images of other distributions in Q-Q Plot distributions.  That is I would like to determine if my distribution determine if my distribution more closely resembles an exponential, Weibull, Normal, Log-Normal, etc. using the Q-Q Plot.  Not sure if there is an existing package or function to do this or if trail by error is the best approach.  From the below, it sounds like I would have to construct a series of Q-Q plots and manually compare them against my distribution.      

Thank you again for any further insights. 
  

     

--- On Thu, 2/12/09, Juliet Hannah <juliet.hannah@gmail.com> wrote:
From: Juliet Hannah <juliet.hannah@gmail.com>
Subject: Re: [R] Website, book, paper, etc. that shows example plots of  distributions?
To: jasonkrupert@yahoo.com
Cc: R-help@r-project.org
Date: Thursday, February 12, 2009, 1:00 PM

You may find the qreference function in the DAAG package helpful. It
makes several QQ plots to give a sense of what kind of fluctuations
can be expected.

You can also construct a series of any plots you are interested in
(using different distributions), and modifying the code in this
function may help with this.

On Thu, Feb 12, 2009 at 1:04 PM, Jason Rupert <jasonkrupert@yahoo.com>
wrote:
> By any chance is any one aware of a website, book, paper, etc. or
combinations of those sources that show plots of different distributions?
>
> After reading a pretty good whitepaper I became aware of the benefit of I
the benefit of doing Q-Q plots and histograms to help assess a distribution.  
The whitepaper is called:
> "Univariate Analysis and Normality Test Using SAS, Stata, and
SPSS*" , (c) 2002-2008 The Trustees of Indiana University Univariate
Analysis and Normality Test: 1, Hun Myoung Park
>
> Unfortunately the white paper does not provide an extensive amount of
example distributions plotted using Q-Q plots and histograms, so I am curious if
there is a "portfolio"-type  website or other whitepaper shows
examples of various types of distributions.
>
> It would be helpful to see a bunch of Q-Q plots and their associated
histograms to get an idea of how the distribution looks in comparison against
the Gaussian.
>
> I think seeing the plot really helps.
>
> Thank you for any insights.
>
>
>
>        [[alternative HTML version deleted]]
>
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>



      
	[[alternative HTML version deleted]]


