Changes

== Statistics ==

== Statistics ==

Bias means flaws in the collection, analysis or interpretation of research data that lead to incorrect conclusions.<ref>https://www.cdc.gov/vaccines/about/terms/glossary.htm#b</ref>

Bias means flaws in the collection, analysis or interpretation of research data that lead to incorrect conclusions.<ref>https://www.cdc.gov/vaccines/about/terms/glossary.htm#b</ref> Sampling bias is a form of bias in which some members of a population to be studied are more likely to be selected than others, so that the sample does not accurately reflect the population. A particular form of sampling bias is self-selection bias, in which the members select themselves, so that any conclusions drawn from the sample are biased in favor of those who would be more likely to choose to participate.

== Psychology ==   

== Psychology ==