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Re: Chronic Low-Level Radiation Exposure Causes Chromosomal Aberr ations

To: Jack_Earley@RL.GOV, muckerheide@MEDIAONE.NET, jacobusj@ors.od.nih.gov, radsafe@list.vanderbilt.edu, health_physics@yahoogroups.com
Subject: Re: Chronic Low-Level Radiation Exposure Causes Chromosomal Aberr ations
From: AndrewsJP@AOL.COM
Date: Wed, 19 Dec 2001 17:51:11 EST
Reply-To: AndrewsJP@AOL.COM
Sender: owner-radsafe@list.vanderbilt.edu

In a message dated 12/19/2001 11:38:26 AM Eastern Standard Time, Jack_Earley@RL.GOV writes:

I seem to recall needing a minimum of 30 before the data are
significant

This applies to the normal distribution. For a few observations my guess is that the Poisson distribution would be useful, or other non-parametric statistics could be used. I have not looked at the data. Just commenting on the 'more than 30' value.

John Andrews
Knoxville, Tennessee

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