Which of the Following Is True of Variance

question 109

Multiple Choice

Which of the following is true of variance?

• A) The formula to calculate variance of a population is not the same as the formula to calculate variance of a sample.
• B) Its value is inversely proportional to the degree to which the data is spread from the mean.
• C) It only requires the middle 50% of data to be calculated.
• D) It is the square root of standard deviation.

---

Definitions:

Total Lung Capacity (TLC)

Refers to the maximum amount of air the lungs can hold after a maximum inhalation effort.

Inspiratory Capacity (IC)

The maximum volume of air that can be inhaled after a normal exhalation.

Functional Residual Capacity (FRC)

The volume of air remaining in the lungs after a normal exhalation.

Inspiratory Reserve Volume (IRV)

The highest volume of air that one can breathe in following a regular breath.