A qualitative variable is a variable that expresses a quality. Values do not have numerical meaning and cannot be ordered numerically. Height, mass, age, and shoe size would all be measured in terms of numbers. So, these categories do not contain qualitative data.

Is age a qualitative or quantitative?

One question that students often have is: Is age considered a qualitative or quantitative variable? The short answer: Age is a quantitative variable because it represents a measurable quantity.

What type of variable is age?

Technically speaking, age is a continuous variable because it can take on any value with any number of decimal places.