# Is age a discrete or continuous variable? Why?

Age is measured in units that, if precise enough, could be any number. Therefore the set they come from is infinite. For example, someone could be $22.32698457$ years old or $22.32698459$ years old. We could be infinitly accurate and use an infinite number of decimal places, therefore making age continuous.
However, in everyday appliances, all values under $6$ years and above $5$ years are called $5$ years old. So we use age usually as a discrete variable.