The Standard Deviation Can Be Defined as $\sqrt{\Sigma(D-\bar{D})^{2} P}$

question 7

Multiple Choice

The standard deviation can be defined as .

• A)\( \sqrt{\Sigma(D-\bar{D})^{2} P} \)
• B) \( \sqrt{\Sigma(D-\bar{D}) P} \)
• C) \( \sqrt{(D-\bar{D}) \rho} \)
• D) \( \sqrt{(\bar{D}-D) P} \)

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Definitions:

Retina

A thin layer of tissue located on the inside back wall of the eye, containing 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.

Lens

A part of the eye that focuses light onto the retina, enabling vision.

Light

A form of electromagnetic radiation visible to the human eye, critical for sight and involved in various biological processes.

Retina

The light-sensitive layer of tissue at the back of the inner eye, responsible for converting light into neural signals sent to the brain.