Bias

This is a systematic error in a survey that can influence and skew the outcome of the data in a certain direction.

Bias is an error in a survey that influences a users answer which spoils the outcome data

The two Asses (bias bi=two) divert the questions in a specific direction.

Examples of bias in a survey would be only asking certain age groups or one gender, but it could also include the sample size being too small or questions which limit the possible answers.