A Variable That Can Take on a Range of Values

question 18

Multiple Choice

A variable that can take on a range of values that correspond to some quantitative amount is called a:

• A)categorical variable
• B)continuous variable
• C)classificatory variable
• D)independent variable

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Definitions:

Photoreceptor

A light-sensitive cell located on the retina that converts light energy into neural impulses.

Iris

the colored ring around the pupil of the eye, responsible for controlling the size of the pupil and thus the amount of light that enters the eye.

Light Entering Eye

The process by which visual information begins its journey to perception, involving photons passing through the eye's structures to reach and stimulate the retina.

Retina

The retina is a thin layer of tissue located on the inside back wall of the eye, which contains cells that are sensitive to light and trigger nerve impulses that pass via the optic nerve to the brain, where a visual image is formed.