[R] Interpreting Q-Q Plots

[Peter Alspach]

Tena koe Rich

Probably highly skewed to the right, with discrete values (perhaps due to the limitations in the accuracy of the assessment equipment).  But note:

library(fortunes)
fortune('chicken')

HTH .....

Peter Alspach

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Rich Shepard
Sent: Tuesday, 15 May 2012 9:53 a.m.
To: r-help at r-project.org
Subject: [R] Interpreting Q-Q Plots

   My understanding of Q-Q plots is that if the tails of the plotted points fall above or below the x=y line the distribution of observed/measured values is under or over dispersed. But, how do I interpret measured values that are in horizontal lines? The attached plot illustrates this situation.

TIA,

Rich

The contents of this e-mail are confidential and may be subject to legal privilege.
 If you are not the intended recipient you must not use, disseminate, distribute or
 reproduce all or any part of this e-mail or attachments.  If you have received this
 e-mail in error, please notify the sender and delete all material pertaining to this
 e-mail.  Any opinion or views expressed in this e-mail are those of the individual
 sender and may not represent those of The New Zealand Institute for Plant and
 Food Research Limited.