A group of 10 students participated in a study of nutritional awareness.What is the sample variance 
of their scores?
20,19,22,20,15,18,15,21,19,20
Definitions:
Sympathetic Nervous System
Part of the autonomic nervous system that prepares the body for 'fight or flight' responses in reaction to stress or perceived threats.
Motor Cortex
A region of the cerebral cortex involved in the planning, control, and execution of voluntary movements.
Frontal Lobes
The part of the brain located behind the forehead that is responsible for complex cognitive functions, including behavior, learning, personality, and voluntary movement.
Angular Gyrus
A region of the brain in the parietal lobe that is involved in processing language, numbers, and spatial cognition.
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