Continuous variables

We have already met several examples of continuous random variables in probability. Continuous variables are numerical and have an infinite number of values in $(-\infty, \infty)$. Some examples of continuous variables include

• weight;

• height;

• temperature;

• age;

• time.

Notice that some of these examples are restricted, for example we cannot have a negative weight, height or age and so these continuous variables must lie between $(0,\infty)$.