Learn in the textbookPrecision, Bias, and Various Biases
DefinitionInformation bias (情報バイアス) is a statistical bias in which the values obtained while measuring or answering are themselves off from the true value.
ExplanationFor example, a leading question such as “What do you think of this handy new feature?” draws more favorable answers. An uncalibrated instrument or a respondent's faulty memory can also shift the values.
AnalogyA warped mirror distorts everyone it reflects. Changing who stands in front of it does not help; you will not see a true image until the mirror is fixed.