Re: Basic caution about cancer clusters

[Chris Alston <alstonc@odrge.odr.georgetown.edu>]

At 04:01 PM 5/1/00 -0500, you wrote:
>>      Find the average breast cancer rate; now, how many of ALL the NPP
>>      sites are above the average?  By definition, 50%.

Aren't you talking about the median, rather than the arithmetic mean?
Simply knowing the average doesn't tell you anything about the distribution
of the data points, does it?

cja
alstonc@odrge.odr.georgetown.edu
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