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Exhibit 3-3
A researcher has collected the following sample data. The mean of the sample is 5.
3 5 12 3 2
-Refer to Exhibit 3-3. The standard deviation is
Backflow
The flow of a fluid in a direction opposite to its usual or intended direction, often causing contamination or malfunction in plumbing or in bodily systems.
Valves
Structures present in the heart and veins that maintain unidirectional flow of blood by opening and closing in response to pressure differences.
Venous Valves
Structures within veins that prevent the backward flow of blood, crucial for blood returning to the heart.
Tunica Media
The middle layer of the wall of a blood vessel consisting mainly of smooth muscle cells and elastic fibers, responsible for regulating the diameter of the vessel.
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