Question

Next time you see an elderly man, check out his nose and ears! While most parts of the human body stop growing as we reach adulthood, studies show that noses and ears continue to grow larger throughout our lifetime. In one study1 examining noses, researchers report "Age significantly influenced all analyzed measurements:" including volume, surface area, height, and width of noses. The gender of the participants in the study was also recorded, and the study reports that "male increments in nasal dimensions were larger than female ones." How many variables are mentioned in this description?

Answer 1

I see 4 variables in the paragraph. Volume, surface area, height, and width.

Answer 2

There are four variables: volume, surface area, height and width.

Explanation:

In the environment the phenomena observed can be linked to a given set of possible outcomes. In this way, variable can be understood as any quantity, quality, magnitude of a characteristic that can have several numerical values.

Variable can be understood as a classification or measure; an amount that changes in each case or unit of study. A property in the study object that can be measured and enumerated.