A Researcher Has Calculated a Variance of 9 for a Data

question 20

Multiple Choice

A researcher has calculated a variance of 9 for a data set.What is this data set's standard deviation?

• A) 1
• B) 3
• C) 4
• D) 5

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Definitions:

Extrapyramidal System

A neural network in the brain that is part of the motor system causing involuntary reflexes and movement control.

Skilled Movements

Movements that require coordination and precision, often learned through practice, involving specific brain regions such as the cerebellum and motor cortex.

Unconscious Movements

Movements that occur without conscious intent or awareness, typically reflexive or automatic in nature.

Cerebellum

A part of the brain located at the back of the skull, predominantly involved in regulating motor movements and coordination.