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(i. In constructing a frequency distribution, you should try to have open-ended classes such as
"Under $100" and "$1,000 and over".
(ii. To convert a frequency distribution to a relative frequency distribution, divide each class
Frequency by the sum of the class frequencies.
(iii) When constructing a frequency distribution, try to include overlapping stated class limits, such as
100 up to 201, 200 up to 301, and 300 up to 401.
Cortex
The outermost layer of the brain, responsible for complex functions including memory, attention, perception, cognition, awareness, thought, language, and consciousness.
Dark Adaptation
The process by which the eyes increase their sensitivity to low levels of light, allowing for better vision in dark conditions.
Retinaldehydes
A form of vitamin A that serves as a precursor to retinoic acid, used in skincare for its anti-aging properties.
Trichromatic Theory
A theory in color vision proposing that the human eye has three types of receptors with differing sensitivities to different light wavelengths, corresponding to red, green, and blue.
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