What is the primary function of the Data Validation feature in Excel?

The primary function of the Data Validation feature in Excel is to control what data can be entered in a cell. This feature allows users to set specific rules and criteria that dictate the type and range of data that can be entered. For example, one can restrict entries to whole numbers, date ranges, lists of acceptable values, or even custom formulas. By doing so, Data Validation ensures that only valid data is entered, which helps maintain data integrity and accuracy within a dataset.

While formatting cells according to specific criteria is important, it is a separate function aimed at altering the appearance of the data rather than controlling input. Creating charts and graphs is focused on data visualization, and protecting data is about restricting user interactions with the cells. In contrast, the core purpose of Data Validation directly addresses how users can input data, making it an essential tool for data management in Excel.