Numerical data refers to information that is expressed in numbers or quantifiable values, such as ages, weights, heights, temperatures, counts, or monetary amounts. This type of data can be processed and analyzed using mathematical and statistical techniques, and is used to support decisions and drive insights in various fields, such as finance, marketing, and science. Numerical data can be either continuous, meaning that it can take any value within a range, or discrete, meaning that it is limited to a specific set of values.