A variable numérica is a type of variable that represents measurable quantities, allowing for mathematical operations and análisis estadístico. These variables can take on a wide range of numeric values and are typically divided into two main categories: continuous and discrete.
Variables numéricas continuas can take any value within a given range. For example, height, weight, and temperature are continuous variables because they can be measured with great precision and can take on an infinite number of values within a range. In contrast, Variables numéricas discretas can only take specific, distinct values. An example of a variable discreta es el número de estudiantes en un aula, que solo puede ser un número entero.
In statistical analyses and data science, numerical variables are crucial because they allow for a variety of operations, including averaging, summation, and more complex mathematical modeling. They can also be used in various técnicas estadísticas, such as regression analysis, where the relationship between variables is explored.
Understanding numerical variables is essential for any data-driven field, as they provide the foundational data needed for analysis, modeling, and decision-making.