Uncertainty quantification is a way to understand how certain, or unsure, a person is about something. It is used to measure how reliable a prediction or a statement is. If a person makes a prediction, uncertainty quantification can tell us how sure or unsure the person is about their prediction. To measure this uncertainty, experts use numbers, probability, and other methods of measuring the confidence they have in their prediction. By measuring the uncertainty, an expert can know how likely it is that their prediction is correct.