At 07:32 AM 7/13/00 -0400, Paige Miller wrote:
>How exactly do you generalize the results from a "sample" of people who
>elect to respond to an opinion question, for example at http://cnn.com,
>to a larger population?
this is precisely the problem ... since, there is essentially NO control
over the selection OF the sample ... and that is the key
for a mail survey for example ... or a telephone poll ... YOU are in
control of who you mail to or phone ... though obviously you are not
necessarily in control of who, from that sample ... opts to respond
>--
>Paige Miller
>Eastman Kodak Company
>[EMAIL PROTECTED]
>
>"It's nothing until I call it!" -- Bill Klem, NL Umpire
>"Those black-eyed peas tasted all right to me" -- Dixie Chicks
>
>
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