Examine how bias plays a part in a practitioner's performance. One type of bias is selection bias, which occurs when the selection of a practitioner leads to an outcome that is different than what would have been obtained if an entire audience was targeted instead of a selected one. An example would be surveys used to gain a perspective of an audience's point of view, such as using surveys to determine which candidate a voter would vote for. However, if the survey favors one side or party and systematically misrepresents another, the results will be skewed and inaccurate. This bias or error may not be found out unless other practitioners conduct a similar survey without selection bias.

Discuss how bias plays a part in a practitioner's performance. An explanation of what bias is from a practitioner's perspective, an example of how it has occurred in the past, and ways to prevent it in the future.