What function would you use to display the largest cell value in a data set?

The function used to display the largest cell value in a data set is the Max function. This function specifically identifies the highest numerical value from a specified range of cells. When applied, it scans through the selected data set to locate and return the maximum value found, making it an essential tool for data analysis when you need to quickly determine the peak figure within your data.

In contrast, other functions like Min are used to find the smallest value, Sum calculates the total of all selected values, and Average computes the mean of the data set. These functions serve different purposes and would not provide the maximum value, which is why the Max function is the correct choice.