display | more...

A sample selected in such a way that any member of the population has a chance of being surveyed or interviewed. Random samples are used are used during polls to ensure that the poll is unbias to a certain response. If someone is polling on the subject of government spending, and they only took a sample of the upper class population, it would not include the ideology of lower class citizens and would represent ideas bias to the upper class.

Log in or register to write something here or to contact authors.