What function do metrics serve in a workbook?

Metrics play a critical role in a workbook by assisting in the calculation of differences between data sets for comparison. This function is vital for analytical purposes, as it enables users to quantify variations and assess performance trends over time. By leveraging metrics, users can derive meaningful insights that drive decision-making processes, such as identifying inefficiencies, recognizing growth opportunities, and evaluating the effectiveness of strategies.

While the other options represent functionalities that can exist within a workbook, they do not capture the primary purpose of metrics. The creation of visual charts is a separate function focused on data presentation rather than the quantitative analysis that metrics provide. Tracking user activity pertains to usability and monitoring aspects, which are not directly linked to how metrics function in a quantitative context. Managing permissions involves controlling access rights, which is an administrative task rather than a metric-related function. Thus, the definition of metrics as tools for comparison stands out as essential for data analysis and interpretation in a workbook.