Mathematics
Discrete vs Continuous Random Variables
Quick fact
Discrete random variables are like counting numbers—like 1, 2, or 3. Continuous ones are like measurements on a ruler—you can have any value between two points.
Why this is interesting
Did you know that the number of heads you get when flipping a coin is different from how long it takes for a light bulb to burn out? That’s because one is countable, and the other is not.