What Speed Should Be Used for the Rotating Drum of a Water-Sealed

question 87

Multiple Choice

What speed should be used for the rotating drum of a water-sealed spirometer to measure volume changes during a forced vital capacity maneuver?

• A) 16 mm/min
• B) 32 mm/min
• C) 160 mm/min
• D) 1920 mm/min

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Definitions:

Standard Deviation

The measure of the dispersion of a set of values relative to its mean, indicating how spread out the values are.

Standard Normal Curve

A bell-shaped curve that is symmetric about the mean, representing the distribution of a standard normal variable with a mean of zero and a variance of one.

Mean

The arithmetic average of a set of numbers, calculated by dividing the sum of all values by the count of the values.

Frequency Curve

A graphical representation depicting the distribution of different frequencies of a set of data.