Which of the Following Statements About Outliers Is Not True

question 20

Multiple Choice

Which of the following statements about outliers is not true?

• A) Outliers are values very different from the rest of the data.
• B) Outliers bias the mean.
• C) Outliers bias regression parameters.
• D) Outliers are influential cases.

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Definitions:

IQ

An acronym for Intelligence Quotient, a measure of a person's intellectual abilities in relation to their age group.

Double-blind Procedure

An experimental setup in which neither the participants nor the experimenters know who is receiving a particular treatment, to prevent bias.

Placebo Effect

A phenomenon where individuals experience a perceived or actual improvement in their condition despite receiving a treatment that has no therapeutic effect.

Control Groups

In experimental research, a group of subjects not exposed to the treatment or intervention being tested, serving as a baseline comparison for the experimental group.