Which one of the following is an example of a ratio level of measurement?
A) the number of times a laboratory monkey presses a bar in its experimental chamber during a one-hour period
B) the temperature in Celsius of a hospital patient
C) a racing-car driver's position at the end of a race
D) a patient' rating of his own anxiety level on a scale where l0 represents "low anxiety" and l00 represents "extreme anxiety"

Question

Quizplus · Accepted Answer

A ratio level of measurement involves a meaningful zero point and a ratio of values, such as counting the number of times a monkey presses a bar in a one-hour period. Temperature (B) is an interval level of measurement because it has a meaningful zero point but does not have a ratio of values. A racing-car driver's position (C) is an ordinal level of measurement because it represents a ranking order, but the differences between the positions are not meaningful. A patient's rating of anxiety level (D) is an ordinal level of measurement because the differences between the rating numbers are not necessarily equal.

Which One of the Following Is an Example of a Ratio