Which advanced Google Sheets function gives you a list that removes all duplicate values?

The advanced function that provides a list with all duplicate values removed is the "Unique" function in Google Sheets. This function is designed specifically to identify and extract unique values from a range or array, ensuring that each value appears only once in the resulting list.

When you apply the Unique function, it scans through the specified range of data and returns a new range that consists exclusively of distinct entries. This is particularly useful for data analysis or when cleaning datasets, as it helps to simplify information and eliminate redundancy.

The other options serve different purposes; for example, the Filter function allows you to display only certain rows based on specified criteria, but it does not specifically focus on removing duplicates. The Average function computes the mean of a set of numbers and is unrelated to handling duplicates. Data Validation is used to control what data can be entered into a cell, which does not involve managing duplicates either. Thus, the Unique function stands out as the best choice for removing duplicate values in a list.