Math
Bias.
Definition
A systematic error in data collection or analysis that causes results to consistently favor certain outcomes over others. Bias makes a sample unrepresentative of the population and can lead to invalid conclusions.
Examples
Real-world.
- 1 Surveying only students at a gym about exercise habits creates selection bias — the sample over-represents active people
- 2 A question like 'Don't you agree that...' introduces response bias by leading respondents toward a particular answer