Find the Variance for the Given Sample Data $$\begin{array} { l l l l l } 7 & 7 & 2 & 5 & 1\end{array}$$

question 103

Multiple Choice

Find the variance for the given sample data. Round your answer to one more decimal place than the original data. $$\begin{array} { l l l l l } 7 & 7 & 2 & 5 & 1\end{array}$$

• A) 11.8
• B) 6.2
• C) 7.7
• D) 7.8

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Definitions:

Astigmatism

A refractive error of the eye that causes distorted or blurred vision due to an irregular curvature of the cornea or lens.

Refractory Error

A visual impairment where the eye does not bend or refract light correctly, leading to blurred vision.

Intraocular Pressure

The fluid pressure inside the eye, essential for maintaining the eye's shape and proper optical function.

Near Point

The closest distance at which an object can be seen clearly by the eye, a measure of the eye's ability to accommodate.