¥How were the 70 trees in NOAMER 1400 selected?
1.How representative are these trees of the population of
trees that grew from 1400-2000?
In terms of geography, altitude, and type.
2.If these trees seemed ÒinterestingÓ to various
individuals who took the core samples,
should one believe those trees can/should be treated as a
Òrandom sampleÓ? Are there biases in the selection of
these trees?
3.Presumably many trees could not be sampled because they had died or been harvested.
What is the effect of this ÒcensoringÓ on the data
(and the analysis)?
4.What is the correlation between temperature and tree ring growth?
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