Hello!
median: the middle value of an organized set of numbers
Mode: the number that appears most in a set of numbers
lets start by organizing these numbers:
19, 18, 16, <u>15</u>, <em>12</em>, <em>12</em>, 10
Median: <u>15</u>
Mode: <em>12</em>
I hope this helps, and have a nice day!