What Characteristic Must a Scale Possess in Order for the Researcher

question 15

Multiple Choice

What characteristic must a scale possess in order for the researcher to compute the ratio of the magnitude of the numbers?

• A) It must have an arbitrary zero point.
• B) The range of the absolute scale intervals must be divisible by two.
• C) It must use only integers.
• D) It must have an absolute zero point.
• E) The modal ratio must be greater than two.

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Definitions:

Gas Exchange

The biological process through which gases (e.g., oxygen, carbon dioxide) are transferred between the blood and the external environment in the lungs.

Bohr Effect

Named for Danish physiologist Christian Bohr (1855–1911). Shift of the oxygen-hemoglobin dissociation curve to the right or left because of changes in blood pH. The definition sometimes is extended to include shifts caused by changes in blood carbon dioxide levels.

Oxygen-Hemoglobin Dissociation Curve

A graph showing the relationship between the oxygen saturation of hemoglobin and the partial pressure of oxygen in the blood.

pH

A scale used to specify the acidity or basicity of an aqueous solution, ranging from 0 to 14, where 7 is neutral.