The mode is the value from a given set of data that occurs most often. It is the data with the highest frequency.
Given:
16,12,10,15,7,9,16
Form the above data given;
Rearranging for easy identification, we have;
7,9,10,12,15,16,16

From the above, we can deduce that the mode is 16 because it appears the most often. It appears twice.
Therefore, the mode is 16.