Talk:Sampling bias

message: This isn't necessarily best; it can be quite the opposite.  Those who care most aren't bound to be true reflections of the population, especially if there's more room or inclination for people to care (or not) one way than the other.  I can imagine this: Some government proposal has already been given the green light or even just been implemented.  Many people were in favour of it, but they are already set to get their way and so might not bother voting.  OTOH those who are against the idea are likely to flood the poll in protest.
It's also possible that the statment of a poll can be biased, by stating only one side of the argument.  I can imagine this leading to biased results.... -- Smjg 15:31, 17 Jun 2005 (UTC)
thread_title:  "At best, this means the people who care most about an issue will answer" 

message: This article has turned into a childish description of one specific type of misuse of statistics. Biased sampling has many forms and is sometimes unavoidable, but when the type of bias in the sampling mechanism is known it can be taken into account and possibly corrected in the analysis (that is, one can draw inference for the unbiased population given a biased sample). So it needs a major rewrite I cannot provide at the time.--Boffob 18:23, 12 January 2007 (UTC)
thread_title:  Some bad splitting occured here... 

message: This could use an overhaul in spelling and grammar check. If it weren't so late I'd do it myself. I'll come around and do it sometime if no one else wants to. (forgot to sign my post!)Imasleepviking 13:46, 1 February 2007 (UTC)
thread_title:  Cleaning up 

message: I merged ascertainment bias to here, but most examples were already mentioned, and I found it unnecessary to have multiple examples for each type. Yet, if you find any of these very important, feel free to add them too. Mikael Häggström (talk) 05:24, 4 May 2010 (UTC)
thread_title: Merged, but in which types of sampling bias should these examples belong?

message: The section on "Historical Examples seems to contain an error.  It asserts that the Tribune came out with the "Dewey Defeats Truman" headline due to reliance on a "phone survey".  Yet the source cited for this section says something quite different:
http://www.uh.edu/engines/epi1199.htm
This source asserts that the Gallup Poll take for the election was taken two weeks before the election, and not updated.  Nothing is said about this having been a "phone poll," and the actual reason for the incorrect headline was the Tribune's reliance on old data, not a "phone poll".  I think an earlyer portion of the article discussing the 1936 Landon-Roosevelt election has been conflated with the Dewey-Truman material.  —Preceding unsigned comment added by 74.92.174.105 (talk) 23:46, 19 May 2011 (UTC)
thread_title: Dewey : Phone Sampling

message: There is a short article on samlple selection and consistency of estimators, that discusses different sample selection equations, and would like to link to it. See it here. Let me know if it would be fine.
               - I have now added the link for selection equations (15.Nov2011)  — Preceding unsigned comment added by Esben.juel (talk • contribs) 18:01, 15 November 2011 (UTC)
thread_title:  an article link