A Quantity That Measures the Variation of a Population or a Sample

question 23

Multiple Choice

A quantity that measures the variation of a population or a sample relative to its mean is called the ________.

• A) range
• B) standard deviation
• C) coefficient of variation
• D) variance
• E) interquartile range

---

Definitions:

Echolalia

The automatic and involuntary repetition of words or phrases spoken by others, often observed in individuals with autism and certain other conditions.

Executive Functioning

A set of cognitive abilities that control and regulate other abilities and behaviors, including planning, working memory, attention, problem solving, verbal reasoning, inhibition, mental flexibility, task switching, and initiation and monitoring of actions.

Cognitive Disorder

A category of mental health disorders that primarily affect learning, memory, perception, and problem solving.

Apraxia

A neurological disorder characterized by the inability to perform learned (familiar) movements on command, despite the desire and the physical ability to perform the movements.