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Selection Bias

Author: Jonathan Osters

Source: Image of pot of soup created by Jonathan Osters; Poll Chart created by Joseph G; Image of Clinton, Public Domain http://commons.wikimedia.org/wiki/File:Secretary_Clinton_8x10_2400_1.jpg

Video Transcript

Notes on "Selection Bias"

Terms to Know

Selection Bias

A bias that results from systematically excluding certain subsets of the population from the sample. It is not necessarily intentional.

 

Random Digit Dialing

A method of contacting people on the phone. Random numbers are dialed, so this allows researchers to sample people with unlisted phone numbers.

 

Terms to Know
Random Digit Dialing

A method of contacting people on the phone. Random numbers are dialed, so this allows researchers to sample people with unlisted phone numbers.

Selection Bias

A bias that results from systematically excluding certain subsets of the population from the sample. It is not necessarily intentional.