ITGSS Certified Advanced Professional: Data Analyst Practice Exam

The command in Excel that allows you to easily highlight duplicate values is Conditional Formatting. This powerful feature provides a visual representation of data trends and can be used to automatically format cells based on specific criteria, including identifying duplicates.

When you use Conditional Formatting to highlight duplicates, you can apply formatting styles like colors or borders to make those duplicate values stand out within your dataset. This is particularly useful for data analysis as it enables quick identification of repeated entries, which can signify potential errors or important patterns.

In contrast, Data Validation is mainly used to control the type of data entered into a cell, ensuring it adheres to specific rules or constraints rather than changing its visual style based on its content. Cell Styles, while useful for changing the overall appearance of cells, do not specifically target duplicates. Format as Table is a feature that allows for easy formatting and organization of data but does not contain functionality to highlight duplicates directly. Thus, Conditional Formatting is the best choice for identifying and highlighting duplicate values in Excel.