What are the types of Selection Bias?

The types of selection bias include:-

  • Sampling Bias
    It is a systematic inaccuracy caused by a non-random sampling of a population, resulting in a biased sample with certain members of the population being less likely to be included than others.

  • Time Interval
    Even if all variables have a similar mean, a trial may be discontinued early if an extreme value is achieved (typically for ethical concerns), but the extreme value is most likely to be achieved by the variable with the biggest variation.

  • Data
    When certain groups of data are picked at random to support a conclusion or to reject faulty data, rather than according to previously declared or widely agreed-upon standards.

  • Attrition
    Attrition bias is a type of selection bias that occurs when trial subjects or tests are not completed due to attrition (participant loss).