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The Sum of the Values for All Observations of a Variable

question 18

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The sum of the values for all observations of a variable divided by the number of observations.


Definitions:

Areola

The pigmented area surrounding the nipple on the breast, which can vary in size and color among individuals.

Auricle

The external portion of the ear that captures sound waves and directs them into the auditory canal.

Atrium

An open-roofed entrance hall or central court in an ancient Roman house, or a similar large open space in a modern building.

Alveoli

Tiny air sacs in the lungs where gas exchange between air and blood occurs.

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