Frequently asked questions
When is median more useful than mean?
When a dataset has extreme outliers — a single very high or very low value can pull the mean far from where most of the data actually sits, while the median stays anchored to the middle value regardless.
Can a dataset have more than one mode?
Yes — if two or more values tie for the highest frequency, the dataset is multimodal, and all of them count as modes. If every value appears exactly once, there's no mode at all.