MattieShoe, on Sep 23 2009, 03:23 PM, said:
I hate it when the word scientific is used like this. what makes a poll "scientific"?
A "scientific" poll may be a sort of buzz word sometimes but it is not completely meaningless.
To make a poll scientific, you need to control its bias. You may not be able to eliminate all kinds of bias, but at least the poll should be based on an established, well-described methodology that allows critical readers to assess the magnitude of the bias.
For example, if you have polled random people found in the white pages, you bias against potential respondents likely not to be listed, to refuse to answer, or not to be reachable. Say you specify that you tried each respondent up to 3 times, two weekday evenings between 8 and 9 and one Sunday between 11 and 17, or at a time recommended by another member of the household. Also, you specify in the protocol exactly how the question was phrased and how possible answers were categorized. You must report how many people were selected but did not participate for various reasons. Then readers can judge the quality of your poll, for example by looking at studies that compare the results from polls using the described method to polls using other methods.
In contrast, just setting up an internet site where anyone can vote is subject to completely uncontrolled bias.
The world would be such a happy place, if only everyone played Acol :) --- TramTicket