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en.wikipedia.org/wiki/Opinion_poll

An opinion poll, sometimes simply referred to as a poll, is a human research survey of public opinion from a particular sample. Opinion polls are usually designed to represent the opinions of a population ... The first known example of an opinion poll was a local straw poll conducted by The Aru ..... Random House, 1993.

en.wikipedia.org/wiki/Open_access_poll

An open access poll is a type of opinion poll in which a nonprobability sample of participants self-select into ... This does not make the results of the poll completely representative of the population but it ... of an opinion poll with no statistical or scientific reliability, which is therefore not a good indicator of opinion on an issue.

www.answers.com/Q/The_best_polls_take_a_random_sample_from_the_population_being_polled_What_does_that_mean

every person in the population has the same chance of being selected. ... The best polls take a random sample from the population being polled What does that mean? The best polls take a random sample from the population being polled ...

www.pewresearch.org/fact-tank/2016/09/08/understanding-the-margin-of-error-in-election-polls

Sep 8, 2016 ... Because surveys only talk to a sample of the population, we know that ... result that we would get if we interviewed everyone in the population. ... A plus or minus 3 percentage point margin of error would mean that 48% ... News reports about polling will often say that a candidate's lead is .... It's being fixed.

cstl-cla.semo.edu/rdrenka/renka_papers/polls.htm

The object is not to poll the whole population, but rather to draw a sample from it and directly poll them for sake of .... The term "random" does not mean haphazard or nonscientific. ..... They often make no pretense of being legitimate surveys.

www.aapor.org/Education-Resources/Election-Polling-Resources/Sampling-Methods-for-Political-Polling.aspx

To sample individuals, polling organizations can choose from a wide variety ... In a probability sample, all persons in the target population have a known chance of being ... For example, in a telephone survey based on random digit dialing (RDD) ... Participants are included in the sample by other means—typically because ...

www.crf-usa.org/election-central/public-opinion-polls.html

Assessing Public Opinion Polls Building your Own Public Opinion Poll Part One ... Everything else being equal, an election poll of 100,000 out of two million voters ... Although you probably don't have the means to conduct a scientific opinion poll, you can take an informal poll. ... Try to get a random sample of the population.

www.robertniles.com/stats/margin.shtml

So companies, campaigns and news organizations ask a randomly selected ... But how many people do you need to ask to get a representative sample? ... that the people you picked do not accurately represent the U.S. population as a whole ? ... gives you a margin of error of 2.5 percent, which is pretty darn good for a poll.

media.gallup.com/muslimwestfacts/pdf/pollingandhowtouseitr1dreveng.pdf

A scientific, nonbiased public opinion poll is a type of survey or inquiry ... It is important in a random sample that everyone in the population being studied ... samples are chosen in order to make generalizations ... respondents believe as they do or how to change their ... means that if we asked all Americans this question, we.

blog.verint.com/random-sampling-explained

Feb 16, 2009 ... Those telephone polls used random sampling, where the AOL poll used a ... of selecting any member of the population ("probability sampling"). ... When dealing with people, you need to make sure that there is an ... Interestingly, the random in random sampling doesn't mean that there can't be a pattern.