ELI5: Explain Like I'm 5

Statistical randomness

Statistical randomness means that something is unpredictable and cannot be predicted with any precision. It's like rolling dice - you can't tell ahead of time what number you will end up with! Randomness helps us figure out how likely something is to happen, and how things work in general. For example, if you roll a die and get a 3, it is statistically random because it could not have been predicted with any accuracy. In other words, randomness tells us that any number (1-6) has an equal chance of happening.