Aidan works a different number of hours each week, depending on whether he is needed or not. for the last nine weeks, he has worked the following number of hours.

1, 3, 1, 1, 4, 5, 8, 6, 5

which measure of central tendency would be the most effective for aidan to use if he wants to demonstrate to his supervisor that he hasn't worked very many hours recently?

mean
median
mode