An oopsie in the Doran/Zimmerman 97% consensus claim

Watts Up With That?

David Burton writes:

I just realized the obvious answer to a question that has been nagging in the back of my mind for nearly a year and a half.

In 2008 Margaret Zimmerman asked two questions of 10,257 Earth Scientists at academic and government institutions. 3146 of them responded. That survey was the original basis for the famous “97% consensus” claim.

For the calculation of the degree of consensus among experts in the Doran/Zimmerman article, all but 79 of the respondents were excluded. They wrote:

 

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