Represent Data – Manage Numerical Continuous Data using Groups. . Concept/s in Focus: 👉 Numerical data is collected in response to a question where answers are numbers which imply a measurement on a scale e.g. height. 👉 Numerical data is always ordinal – the order of the numerical data in a data display need to be in order or the data will make less sense e.g. student heights from smallest to largest. 👉 Categorical data is discrete. Each variation of the category of data collected is complete