AP Statistics – Types of Bias – Flashcards

A portion of the population has been excluded from the sample or is not proportionally represented to how it is in the population Can arise from: absence during sampling because of location/day/time/other

- Occurs when some individuals who are A PART of the survey do not respond - Those who choose not to respond may differ from those who do

- When something in the survey design influences the response - If someone feels uncomfy answering a question, they may be reluctant to tell the truth and change their answer to avoid judgement, interviewer behaviour, or question wording

Occurs if poor wording of question results in lack of clarity or if question presents only one side of argument (bias)

When volunteering to respond, it is typical that only those who are passionate (strongly against or for) respond to the surveys/attend meetings/express opinions. This leads to a lack of representation for the moderate/middle group