Sampling Bias – Definition, Types and Examples informativetricks.com

Sampling bias occurs when the likelihood of participation of some members in a population is greater than others. It occurs when researchers and observers intentionally prefer some members of a population over others. It results in biased samples, including data from participants that do not best represent the whole population. Thereby, the results extracted by analysing biased data do not predict useful relationships and trends among variables involved in a study.